Audi A4 CGLC limp mode

   #1  

carsey

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VCDS Serial number
C?ID=112786
Hi all

Just had a fault crop up on my 2012 A4 CGLC Quattro where it drops into limp mode and throws the ESC Light on with a flashing Glow plug light.

Plugged it in when I got home and seen there was a few fault codes on the Sensor Reference Voltage B - Open Circuit.

When the fault comes on, either running or sat with ignition on, the revs increase to 1000rpm over standard 750rpm and the lights mentioned above illuminate. Theres also a change in engine note and engine is pretty shuddery when stopping. Upon restarting, it can often turn over a couple turns rather than firing up straight away.

Only things done to the car is a ECU remap and a EGR blank (remapped due to EGR throwing codes up causing limp about 2 years ago and been perfect since)

Ive included a full VCDS scan below for reference.

Any help appreciated.

Chris


Code:
Sunday,08,December,2019,15:50:50:09611
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 19.6.1.0
Data version: 20190529 DS308.0
[url]www.Ross-Tech.com[/url]


VIN: WAUZZZ8K9Dxxxxx   License Plate: CHSSCFULL
Mileage: 103950km-64591mi   Repair Order: 


Chassis Type: 8K-AU48 (8R0)
Scan: 01 03 05 08 09 15 16 17 19 2E 42 44 46 47 52 53 56 62 72 77
         

VIN: WAUZZZ8K9DA01xxxxx   Mileage: 103950km-64591miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: Malfunction 0010
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: Malfunction 0010
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: Malfunction 0010
56-Radio -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CGLC)       Labels:. 03L-906-018-CGL.clb
   Part No SW: 03L 906 018 JH    HW: 03L 906 018 JL
   Component: R4 2,0L EDC   H25 2903  
   Revision: 45H25---    
   Coding: 0A194012242601080000
   Shop #: WSC 06324 000 00000
   ASAM Dataset: EV_ECM20TDI01103L906018JH 003003
   ROD: EV_ECM20TDI01103L906018JG.rod
   VCID: 79F303EDF8FCD987DE-802C

2 Faults Found:
4698 - Function Restriction due to Faults in Other Modules 
          U1113 00 [032] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Mileage: 103925 km
                    Date: 2019.12.08
                    Time: 13:20:13

                    Engine speed: 1778.50 /min
                    Normed load value: 5.5 %
                    Vehicle speed: 90 km/h
                    Coolant temperature: 85 °C
                    Intake air temperature: 12 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 14.700 V
                    Unlearning counter according OBD: 40
                    Cruise Control System (CCS): switch position-Bits 0-7: 129
                    Cruise Control System (CCS): status-Bits 0-7: 232
                    Cruise control switch-off: irreversible-Bits 0-7: 4
                    Cruise control switch-off: reversible-Bits 0-7: 15
                    Cruise Control System: specified speed: 0.00 km/h
                    Engine control module reset status-Bits 0-7: 0
                    Engine control module reset status-Bits 0-7: 0
                    Cruise control switch-off: irreversible w. brake intervention-Bits 0-7: 16

4124 - Sensor Reference Voltage B 
          P0651 00 [032] - Open Circuit
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 103925 km
                    Date: 2019.12.08
                    Time: 13:20:12

                    Engine speed: 1745.00 /min
                    Normed load value: 60.8 %
                    Vehicle speed: 90 km/h
                    Coolant temperature: 85 °C
                    Intake air temperature: 12 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 14.700 V
                    Unlearning counter according OBD: 40
                    Exh.gas temp.sen 1: 485.0 °C
                    Exh.gas temp.sen 2: -0.0 °C
                    Exh.gas temp.sen 3: 342.2 °C
                    Exh.gas temp.sen 4: 287.6 °C
                    Shut-off timer: last engine shut-off time: 719 s

Readiness: 0 0 0 0 X 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
   Part No SW: 8K0 907 379 CJ    HW: 8K0 907 379 CJ
   Component: ESP8 quattro  H09 0100  
   Revision: --------    Serial number: --------------
   Coding: 181544
   Shop #: WSC 06325 000 00000
   VCID: 030F61058230935784-8056

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 FE    HW: 8K0 907 064 FE
   Component: BCM2 2.0      H10 0602  
   Revision: 00002001    
   Coding: 03B10000000000000000
   Shop #: WSC 06325 000 00000
   VCID: 78F506E9CBF6C08FA1-802C

   Subsystem 1 - Part No SW: 8T0 959 754 D    HW: 8T0 959 754 D
   Component: FBSAUDIB8 IDG  H60 0072 
   Serial number: 0812000007530014    

   Subsystem 2 - Part No SW: 8K0 905 852 E    HW: 8K0 905 852 E
   Component: J764 ELV MLB  H40 0046 
   Serial number: 2312000002761004    

1 Fault Found:
00956 - Key 2 
            002 - Lower Limit Exceeded - Intermittent
             Freeze Frame:
                    Fault Status: 00100010
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 234
                    Mileage: 102524 km
                    Time Indication: 0
                    Date: 2019.10.06
                    Time: 09:57:04


-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels: None
   Part No SW: 8K2 820 043 AC    HW: 8K2 820 043 AC
   Component: KLIMA 3 ZONEN H04 0122  
   Revision: D0000000    Serial number: 01310120121717
   Coding: 342402E000
   Shop #: WSC 06325 000 00000
   VCID: 6AD12CA1855A621F27-803E

1 Fault Found:
01314 - Engine Control Module 
            013 - Check DTC Memory - Intermittent
             Freeze Frame:
                    Fault Status: 00101101
                    Fault Priority: 6
                    Fault Frequency: 14
                    Reset counter: 3
                    Mileage: 103925 km
                    Time Indication: 0
                    Date: 2019.12.08
                    Time: 13:20:13

             Freeze Frame:
                    Temperature: 7.0°C
                    RPM: 1800 /min
                    Speed: 90.0 km/h


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 DG    HW: 8K0 907 063 AG
   Component: BCM1 1.0      H14 0103  
   Revision: 07014001    Serial number: 00000025901802
   Coding: 260000118034AFC00081400000001D0D401D030827090201000008000400030100000024000000
   Shop #: WSC 00783 210 84012
   VCID: 77F705D5C6E8CFF7A8-8022

   Subsystem 1 - Part No SW: 8K2 955 119 A    HW: 8T2 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 250112  H06 0070 
   Serial number: SWF12010250214      
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0001 
   Serial number: 20131050            
   Coding: 02005D

   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
   Component: E1 - LDS  H03 0031 
   Serial number: 00000000001901123251

   Subsystem 4 - Part No SW: 4H0 907 658     HW: 4H0 907 658 
   Component: AQ_Hum_Sensor  H02 0002 
   Serial number: 87488C06000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:* 8K0-959-655.clb
   Part No SW: 8K0 959 655 N    HW: 8K0 959 655 N
   Component: AirbagVW-AU10 H45 0610  
   Serial number: 003KFD90MJ6L  
   Coding: 30534435363030303030554A3052384B3053
   Shop #: WSC 63301 000 1048576
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 4895B629F396700F11-801C

   Crash sensor for side airbag: driver side: 
   Serial number: 6334MSME6A12397DO

   Crash sensor for side airbag: front passenger side: 
   Serial number: 6344MSME6A133544A

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 6352QSME56693146H

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 6362QSME0B6A124CO

   Crash sensor for front airbag: driver side: 
   Serial number: 63732SME17683C50+

   Crash sensor for front airbag: front passenger side: 
   Serial number: 63832SME17683376+

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8R0 953 568 Q    HW: 8R0 953 568 Q
   Component: Lenks.Modul   H02 0171  
   Revision: 00000000    Serial number: 20120130001213
   Coding: 000016
   Shop #: WSC 06325 000 00000
   VCID: 4FA79D351EF8A73750-801A

   Component: E221 - MFL  H03 0003 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 982 B    HW: 8K0 920 982 B
   Component: KOMBIINSTR.   H16 0640  
   Revision: 00100000    Serial number: M3B32GNDC     
   Coding: 331D090002012600010001
   Shop #: WSC 06325 123 12345
   VCID: 336FF1C59210E3D754-8066

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8R0 907 468 A    HW: 8R0 907 468 A
   Component: GW-BEM 5CAN   H10 0025  
   Revision: 1V040013    Serial number: 1341V12118863C
   Coding: 00CF07FF00
   Shop #: WSC 06325 000 00000
   VCID: 3D7BD7FDA45425A7B2-8068

   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181 
   Component: J367-BDMHella  H03 8041 
   Serial number: 7388956501          

   Subsystem 2 - Part No SW: 8K0 959 663 B    HW: 8K0 959 663 B
   Component: J532_DCDCStab  H05 0006 
   Serial number: 12029000864021200410

1 Fault Found:
03041 - Energy Management Active 
            000 - - - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 7
                    Fault Frequency: 2
                    Reset counter: 252
                    Mileage: 103355 km
                    Time Indication: 0
                    Date: 2019.11.29
                    Time: 14:18:06

             Freeze Frame:
                    Bin. Bits:    10111
                    Voltage: 11.20 V
                    Count: 6


-------------------------------------------------------------------------------
Address 2E: Media Player 3 (R199)       Labels:. 8T0-035-785.clb
   Part No SW: 8T0 035 785 A    HW: 8T0 035 785 
   Component: SG ext.Player H08 0290  
   Revision: 00000000    
   Coding: 020202
   Shop #: WSC 06325 000 00000
   VCID: 3973C3EDB07C19879E-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8T0 959 793 F    HW: 8T0 959 793 H
   Component: TSG FA        H09 0302  
   Revision: --------    Serial number: --------------
   Coding: 011002204001410001
   Shop #: WSC 06325 000 00000
   VCID: 4C9D8A39EFEE9C2F35-8018

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 8K0-909-144.clb
   Part No SW: 8K0 909 144 F    HW: 8K0 909 144 B
   Component: RCEPS         H36 0507  
   Revision: 00001000    Serial number: 0021322952
   Coding: 100000000001
   Shop #: WSC 63301 000 1048576
   ASAM Dataset: EV_RCEPSAU48X 008014
   ROD: EV_RCEPSAU48X_008.rod
   VCID: 346DF2D99F1EE4EF4D-8060

3 Faults Found:
16400 - Function Restricted due to Insufficient Voltage 
          U1400 00 [008] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 244
                    Mileage: 102164 km
                    Date: 2019.09.04
                    Time: 17:22:10

                    Write only channel

2305 - Function Restriction due to Start Voltage Interruption 
          U1410 00 [008] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 244
                    Mileage: 102164 km
                    Date: 2019.09.04
                    Time: 17:22:09

                    Write only channel

2306 - Function Restriction due to Start Voltage Interruption 
          U1410 00 [008] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 3
                    Mileage: 103370 km
                    Date: 2019.12.02
                    Time: 12:10:15

                    Write only channel


-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 FE    HW: 8K0 907 064 FE
   Component: BCM2 2.0      H10 0602  
   Revision: 00002001    Serial number: 0168526440    
   Coding: 011F062200B900408020013680000000
   Shop #: WSC 06325 123 12345
   VCID: 78F506E9CBF6C08FA1-802C

   Subsystem 1 - Part No: 8K0 951 177 
   Component: DWA-Sensor  H02 0040 

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-BOC.clb
   Part No SW: 8T1 035 223     HW: 8T1 035 223 
   Component: DSP Prem      H04 0040  
   Revision: 00004001    Serial number: 94804001211301
   Coding: 0203010302
   Shop #: WSC 06325 000 00000
   VCID: 6CDD2AB98FAE7C2F55-8038

1 Fault Found:
02247 - Subwoofer (R148/R157) 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 9
                    Mileage: 91922 km
                    Time Indication: 0
                    Date: 2018.09.18
                    Time: 14:17:06

             Freeze Frame:
                    Voltage: 12.70 V
                    Temperature: 38.0°C
                    Temperature: 39.0°C
                    Bin. Bits: 00000100


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8T0 959 792 H    HW: 8T0 959 792 H
   Component: TSG BF        H08 0302  
   Revision: --------    Serial number: --------------
   Coding: 011002204C01410001
   Shop #: WSC 06325 123 12345
   VCID: 4D9B873D14F4952722-8018

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 8K0-907-801-V2.clb
   Part No SW: 8K0 907 801 J    HW: 8K0 907 801 J
   Component: EPB-4         H01 0001  
   Revision: --------    Serial number: 00000000017259
   ASAM Dataset: EV_ParkiBrake 001022
   ROD: EV_ParkiBrake_AU48.rod
   VCID: 3669C8D18962F6FF73-8062

3 Faults Found:
721152 - Brake Pad Replacement Mode Active 
          C1011 00 [000] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear

464128 - Function Restriction due to Faults in Other Modules 
          U1113 00 [009] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 218
                    Mileage: 103925 km
                    Date: 2019.12.08
                    Time: 13:20:13

                    Voltage terminal 30: 14.9 V
                    Internal Fault ID: 187
                    Vehicle speed: 90 km/h
                    Network management state: normal
                    Function light in parking brake button: OFF
                    Red operating lamp: OFF
                    Red warning lamp: OFF
                    Green operating lamp: OFF
                    Yellow warning lamp: OFF
                    Terminal 15 status: On
                    RWU: not active
                    DSD: not active
                    HTR: not active
                    ECD: not active
                    ACC requested apply: not active
                    Auto Adjust: not active
                    General Inspection Function: not active
                    Internal Parking Brake state: Dynamic
                    Status of parking brake button: Not operated
                    Status ParkingBrake left: Open
                    Status ParkingBrake right: Open

464384 - Function Restriction due to Faults in Other Modules 
          U1113 00 [009] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 218
                    Mileage: 103950 km
                    Date: 2019.12.08
                    Time: 15:47:40

                    Voltage terminal 30: 11.8 V
                    Internal Fault ID: 188
                    Vehicle speed: 0 km/h
                    Network management state: normal
                    Function light in parking brake button: On
                    Red operating lamp: On
                    Red warning lamp: OFF
                    Green operating lamp: OFF
                    Yellow warning lamp: OFF
                    Terminal 15 status: On
                    RWU: not active
                    DSD: not active
                    HTR: not active
                    ECD: not active
                    ACC requested apply: not active
                    Auto Adjust: not active
                    General Inspection Function: not active
                    Internal Parking Brake state: static
                    Status of parking brake button: Not operated
                    Status ParkingBrake left: Set
                    Status ParkingBrake right: Set


-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 8Tx-035-1xx-56.clb
   Part No SW: 8R2 035 186 A    HW: 8R2 035 186 A
   Component: Concert3 DAB  H05 0440  
   Revision: 00000005    Serial number: AUZ5Z6L1694807
   Coding: 0403008201018D00875B070800
   Shop #: WSC 06325 123 12345
   VCID: 346DF2D9971EE4EF4D-8060

   Subsystem 1 - Part No SW: 8T0 919 603 F    HW: 8T0 919 603 F
   Component: Display  

1 Fault Found:
03157 - Functionality limited due to Communications Disruption 
            000 - - - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 6
                    Fault Frequency: 40
                    Reset counter: 252
                    Mileage: 99435 km
                    Time Indication: 0
                    Date: 2019.04.06
                    Time: 13:13:59

             Freeze Frame:
                    Bin. Bits: 00000000
                    Bin. Bits: 00000000
                    Bin. Bits: 00000000
                    Bin. Bits: 00000000
                    Bin. Bits: 00000000
                    Bin. Bits: 10000000
                    Bin. Bits: 00000000
                    Bin. Bits: 00000000


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8T0 959 795 H    HW: 8T0 959 795 H
   Component: TSG HL        H07 0302  
   Revision: --------    Serial number: --------------
   Coding: 010002204001210001
   Shop #: WSC 06325 000 00000
   VCID: 50A59E4903C6B8CF49-8004

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-794.clb
   Part No SW: 8T0 959 795 H    HW: 8T0 959 795 H
   Component: TSG HR        H07 0302  
   Revision: --------    Serial number: --------------
   Coding: 010002204001210001
   Shop #: WSC 06325 000 00000
   VCID: 50A59E4903C6B8CF49-8004

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8T0 862 335 F    HW: 8T0 862 335 E
   Component: FSE_256x BT     H45 0660  
   Revision: 00000000    Serial number: 00000005465496
   Coding: 0010320
   Shop #: WSC 06325 000 00000
   VCID: 3D7BD7FD645425A7B2-8068

No fault code found.

End-------------------------(Elapsed Time: 03:45)--------------------------
 
Last edited by a moderator:
   #2  

Uwe

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VCDS Serial number
HC100001
My guess is that limp mode is due to P0651 in the ECU, but that fault is flagged "Intermittent - Not Confirmed", which is usually an indication that the not the cause of any significant issues.

There are a lot of old faults in this car. Suggestion: Please clear fault codes in all modules (do it one module at a time in each module that has fault codes if necessary), then let's see what comes back. This will give us a much better signal to noise ratio.

-Uwe-
 
   #3  

carsey

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Hi

Thanks for your reply.

Cleared the codes and the only ones to come back were the 2 in the engine module, the one in the ABS for fault in another module and also the same fault in the Auto HVAC module.

I just cant see what would be causing it to trip out. Sometimes it will run ok, then other times it'll drop back into limp very quickly.

Usually open circuits would show at least one sensor that would show as being open.

Chris
 
   #4  

Jack@European_Parts

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VCDS Serial number
C?ID=57337
Hello Chris and welcome to the VCDS forum!

Did you know I have found that many things have been reported to cause such codes and not just a sensor but a bad ground, feed power or terminal relay, load device running interference as a false positive DTC or just plain faulty harness?

In cases like this did you know I first unplug engine side harness connector and see if DTC vacates in VCDS, this lets me know if DTC still exists I have issue st ECU or feed of ECU, than verify output ref voltage, further than verify I can manipulate DTC with decade box in VCDS as expected, than further use a load light to first qualify all tracks isolated?

JPPSG
 
   #5  

carsey

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Thanks

I spied a video on youtube about a guy with a similiar issue....

https://www.youtube.com/watch?v=OBQkQW0v6Ak

That guy has a 2.0 CR (in a transporter) so probably very very similar engine and said theres a few components that share the same 5V regulated rail. Crank sensor (probably explains why it takes a few seconds to start occasionally) Fuel rail pressure sensor (not sure how I can link that one to engine running to begin) Intake air flap control actuator (probably explains the poor shutdown of engine if its the same valve that autodata describes...shut off valve), EGR actuator flap (thinking could be the issue due to EGR being crap on these engines), and the turbo vane position sensor (wastegate? again not got a link to that one yet)
 
   #6  

carsey

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Latest scan. Now showing a G28 crank sensor no signal fault with the EML

Code:
Monday,09,December,2019,11:53:58:09611
VCDS -- Windows Based VAG/VAS Emulator Running on Windows XP x86
VCDS Version: 19.6.1.0
Data version: 20190529 DS308.0
[url]www.Ross-Tech.com[/url]


Mileage: 103960km-64597mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 8K-AU48 (8R0)
Scan: 01 03 05 08 09 15 16 17 19 2E 42 44 46 47 52 53 56 62 72 77
         

VIN: WAUZZZ8K9DA014743   Mileage: 103960km-64597miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: Malfunction 0010
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CGLC)       Labels:. 03L-906-018-CGL.clb
   Part No SW: 03L 906 018 JH    HW: 03L 906 018 JL
   Component: R4 2,0L EDC   H25 2903  
   Revision: 45H25---    
   Coding: 0A194012242601080000
   Shop #: WSC 06324 000 00000
   ASAM Dataset: EV_ECM20TDI01103L906018JH 003003
   ROD: EV_ECM20TDI01103L906018JG.rod
   VCID: 79F303EDF8FCD987DE-802C

3 Faults Found:
4698 - Function Restriction due to Faults in Other Modules 
          U1113 00 [047] - -
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 4
                    Mileage: 103958 km
                    Date: 2019.12.09
                    Time: 09:13:02

                    Engine speed: 1455.50 /min
                    Normed load value: 17.3 %
                    Vehicle speed: 50 km/h
                    Coolant temperature: 63 °C
                    Intake air temperature: 12 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.620 V
                    Unlearning counter according OBD: 40
                    Cruise Control System (CCS): switch position-Bits 0-7: 129
                    Cruise Control System (CCS): status-Bits 0-7: 232
                    Cruise control switch-off: irreversible-Bits 0-7: 4
                    Cruise control switch-off: reversible-Bits 0-7: 255
                    Cruise Control System: specified speed: 0.00 km/h
                    Engine control module reset status-Bits 0-7: 0
                    Engine control module reset status-Bits 0-7: 0
                    Cruise control switch-off: irreversible w. brake intervention-Bits 0-7: 16

4124 - Sensor Reference Voltage B 
          P0651 00 [175] - Open Circuit
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 4
                    Mileage: 103958 km
                    Date: 2019.12.09
                    Time: 09:13:02

                    Engine speed: 1450.50 /min
                    Normed load value: 75.7 %
                    Vehicle speed: 50 km/h
                    Coolant temperature: 63 °C
                    Intake air temperature: 12 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.620 V
                    Unlearning counter according OBD: 40
                    Exh.gas temp.sen 1: 175.4 °C
                    Exh.gas temp.sen 2: -0.0 °C
                    Exh.gas temp.sen 3: 185.8 °C
                    Exh.gas temp.sen 4: 183.4 °C
                    Shut-off timer: last engine shut-off time: 1791 s

4087 - Engine Speed Sensor (G28) 
          P0322 00 [032] - No Signal
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 103958 km
                    Date: 2019.12.09
                    Time: 09:12:53

                    Engine speed: 1639.00 /min
                    Normed load value: 25.5 %
                    Vehicle speed: 54 km/h
                    Coolant temperature: 62 °C
                    Intake air temperature: 14 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.560 V
                    Unlearning counter according OBD: 40
                    Engine start: start synchronization: EPM_MODE_BACKUP_CRS
                    Engine start: start synchronization-Test_Program_Epm st Op Mode State t UBYTE: 60

Readiness: 1 1 0 0 X 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: None
   VCID: 55AB6F5DBC24DDE79A-FFFE

No Faults Found
  or DTCs not supported by controller
  or a communication error occurred

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 FE    HW: 8K0 907 064 FE
   Component: BCM2 2.0      H10 0602  
   Revision: 00002001    
   Coding: 03B10000000000000000
   Shop #: WSC 06325 000 00000
   VCID: 78F506E9CBF6C08FA1-802C

   Subsystem 1 - Part No SW: 8T0 959 754 D    HW: 8T0 959 754 D
   Component: FBSAUDIB8 IDG  H60 0072 
   Serial number: 0812000007530014    

   Subsystem 2 - Part No SW: 8K0 905 852 E    HW: 8K0 905 852 E
   Component: J764 ELV MLB  H40 0046 
   Serial number: 2312000002761004    

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels: None
   Part No SW: 8K2 820 043 AC    HW: 8K2 820 043 AC
   Component: KLIMA 3 ZONEN H04 0122  
   Revision: D0000000    Serial number: 01310120121717
   Coding: 342402E000
   Shop #: WSC 06325 000 00000
   VCID: 6AD12CA1855A621F27-803E

1 Fault Found:
01314 - Engine Control Module 
            013 - Check DTC Memory
             Freeze Frame:
                    Fault Status: 01101101
                    Fault Priority: 6
                    Fault Frequency: 5
                    Reset counter: 218
                    Mileage: 103950 km
                    Time Indication: 0
                    Date: 2019.12.08
                    Time: 16:04:37

             Freeze Frame:
                    Temperature: 7.0°C
                    RPM: 920 /min
                    Speed: 0.0 km/h


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 DG    HW: 8K0 907 063 AG
   Component: BCM1 1.0      H14 0103  
   Revision: 07014001    Serial number: 00000025901802
   Coding: 260000118034AFC00081400000001D0D401D030827090201000008000400030100000024000000
   Shop #: WSC 00783 210 84012
   VCID: 77F705D5C6E8CFF7A8-8022

   Subsystem 1 - Part No SW: 8K2 955 119 A    HW: 8T2 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 250112  H06 0070 
   Serial number: SWF12010250214      
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0001 
   Serial number: 20131050            
   Coding: 02005D

   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
   Component: E1 - LDS  H03 0031 
   Serial number: 00000000001901123251

   Subsystem 4 - Part No SW: 4H0 907 658     HW: 4H0 907 658 
   Component: AQ_Hum_Sensor  H02 0002 
   Serial number: 87488C06000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:* 8K0-959-655.clb
   Part No SW: 8K0 959 655 N    HW: 8K0 959 655 N
   Component: AirbagVW-AU10 H45 0610  
   Serial number: 003KFD90MJ6L  
   Coding: 30534435363030303030554A3052384B3053
   Shop #: WSC 63301 000 1048576
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 4895B629F396700F11-801C

   Crash sensor for side airbag: driver side: 
   Serial number: 6334MSME6A12397DO

   Crash sensor for side airbag: front passenger side: 
   Serial number: 6344MSME6A133544A

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 6352QSME56693146H

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 6362QSME0B6A124CO

   Crash sensor for front airbag: driver side: 
   Serial number: 63732SME17683C50+

   Crash sensor for front airbag: front passenger side: 
   Serial number: 63832SME17683376+

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8R0 953 568 Q    HW: 8R0 953 568 Q
   Component: Lenks.Modul   H02 0171  
   Revision: 00000000    Serial number: 20120130001213
   Coding: 000016
   Shop #: WSC 06325 000 00000
   VCID: 4FA79D351EF8A73750-801A

   Component: E221 - MFL  H03 0003 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 982 B    HW: 8K0 920 982 B
   Component: KOMBIINSTR.   H16 0640  
   Revision: 00100000    Serial number: M3B32GNDC     
   Coding: 331D090002012600010001
   Shop #: WSC 06325 123 12345
   VCID: 336FF1C59210E3D754-8066

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8R0 907 468 A    HW: 8R0 907 468 A
   Component: GW-BEM 5CAN   H10 0025  
   Revision: 1V040013    Serial number: 1341V12118863C
   Coding: 00CF07FF00
   Shop #: WSC 06325 000 00000
   VCID: 3D7BD7FDA45425A7B2-8068

   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181 
   Component: J367-BDMHella  H03 8041 
   Serial number: 7388956501          

   Subsystem 2 - Part No SW: 8K0 959 663 B    HW: 8K0 959 663 B
   Component: J532_DCDCStab  H05 0006 
   Serial number: 12029000864021200410

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3 (R199)       Labels:. 8T0-035-785.clb
   Part No SW: 8T0 035 785 A    HW: 8T0 035 785 
   Component: SG ext.Player H08 0290  
   Revision: 00000000    
   Coding: 020202
   Shop #: WSC 06325 000 00000
   VCID: 3973C3EDB07C19879E-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8T0 959 793 F    HW: 8T0 959 793 H
   Component: TSG FA        H09 0302  
   Revision: --------    Serial number: --------------
   Coding: 011002204001410001
   Shop #: WSC 06325 000 00000
   VCID: 4C9D8A39EFEE9C2F35-8018

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 8K0-909-144.clb
   Part No SW: 8K0 909 144 F    HW: 8K0 909 144 B
   Component: RCEPS         H36 0507  
   Revision: 00001000    Serial number: 0021322952
   Coding: 100000000001
   Shop #: WSC 63301 000 1048576
   ASAM Dataset: EV_RCEPSAU48X 008014
   ROD: EV_RCEPSAU48X_008.rod
   VCID: 346DF2D99F1EE4EF4D-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 FE    HW: 8K0 907 064 FE
   Component: BCM2 2.0      H10 0602  
   Revision: 00002001    Serial number: 0168526440    
   Coding: 011F062200B900408020013680000000
   Shop #: WSC 06325 123 12345
   VCID: 78F506E9CBF6C08FA1-802C

   Subsystem 1 - Part No: 8K0 951 177 
   Component: DWA-Sensor  H02 0040 

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-BOC.clb
   Part No SW: 8T1 035 223     HW: 8T1 035 223 
   Component: DSP Prem      H04 0040  
   Revision: 00004001    Serial number: 94804001211301
   Coding: 0203010302
   Shop #: WSC 06325 000 00000
   VCID: 6CDD2AB98FAE7C2F55-8038

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8T0 959 792 H    HW: 8T0 959 792 H
   Component: TSG BF        H08 0302  
   Revision: --------    Serial number: --------------
   Coding: 011002204C01410001
   Shop #: WSC 06325 123 12345
   VCID: 4D9B873D14F4952722-8018

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 8K0-907-801-V2.clb
   Part No SW: 8K0 907 801 J    HW: 8K0 907 801 J
   Component: EPB-4         H01 0001  
   Revision: --------    Serial number: 00000000017259
   ASAM Dataset: EV_ParkiBrake 001022
   ROD: EV_ParkiBrake_AU48.rod
   VCID: 3669C8D18962F6FF73-8062

1 Fault Found:
464128 - Function Restriction due to Faults in Other Modules 
          U1113 00 [009] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 4
                    Reset counter: 218
                    Mileage: 103958 km
                    Date: 2019.12.09
                    Time: 09:13:02

                    Voltage terminal 30: 14.8 V
                    Internal Fault ID: 187
                    Vehicle speed: 50 km/h
                    Network management state: normal
                    Function light in parking brake button: OFF
                    Red operating lamp: OFF
                    Red warning lamp: OFF
                    Green operating lamp: OFF
                    Yellow warning lamp: OFF
                    Terminal 15 status: On
                    RWU: not active
                    DSD: not active
                    HTR: not active
                    ECD: not active
                    ACC requested apply: not active
                    Auto Adjust: not active
                    General Inspection Function: not active
                    Internal Parking Brake state: Dynamic
                    Status of parking brake button: Not operated
                    Status ParkingBrake left: Open
                    Status ParkingBrake right: Open


-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 8Tx-035-1xx-56.clb
   Part No SW: 8R2 035 186 A    HW: 8R2 035 186 A
   Component: Concert3 DAB  H05 0440  
   Revision: 00000005    Serial number: AUZ5Z6L1694807
   Coding: 0403008201018D00875B070800
   Shop #: WSC 06325 123 12345
   VCID: 346DF2D9971EE4EF4D-8060

   Subsystem 1 - Part No SW: 8T0 919 603 F    HW: 8T0 919 603 F
   Component: Display  

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8T0 959 795 H    HW: 8T0 959 795 H
   Component: TSG HL        H07 0302  
   Revision: --------    Serial number: --------------
   Coding: 010002204001210001
   Shop #: WSC 06325 000 00000
   VCID: 50A59E4903C6B8CF49-8004

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-794.clb
   Part No SW: 8T0 959 795 H    HW: 8T0 959 795 H
   Component: TSG HR        H07 0302  
   Revision: --------    Serial number: --------------
   Coding: 010002204001210001
   Shop #: WSC 06325 000 00000
   VCID: 50A59E4903C6B8CF49-8004

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8T0 862 335 F    HW: 8T0 862 335 E
   Component: FSE_256x BT     H45 0660  
   Revision: 00000000    Serial number: 00000005465496
   Coding: 0010320
   Shop #: WSC 06325 000 00000
   VCID: 3D7BD7FD645425A7B2-8068

No fault code found.

End-------------------------(Elapsed Time: 05:02)--------------------------
 
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   #8  

PIVOT

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You have access to a scope? Tap into the ref and see if it's being pulled low, or directly to ground.
 
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   #9  

carsey

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You have access to a scope? Tap into the ref and see if it's being pulled low, or directly to ground.
No access to a scope unfortunately...just a trust old multimeter. I think ive worked out what sensors are on the voltage B line (MAP, crank, EGR, ASV, turbo wastegate, fuel rail pressure) so need to probe them at the +5V pin to see if its getting the right voltage when the fault isnt active, and what sensor is pulling it down when the fault occurs.
Not sure if the no signal from crank sensor may be a red herring though as if its connected on the same part of the loom with the voltage B side, then it might not be getting its signals back to the ECU, thus ECU throws a error for it.

Jack - not sure why the ABS is offline. Maybe the module didnt close down properly when I last accessed it so needs to 'reboot' to stop the communication error.
 
   #10  

Jack@European_Parts

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No access to a scope unfortunately...just a trust old multimeter. I think ive worked out what sensors are on the voltage B line (MAP, crank, EGR, ASV, turbo wastegate, fuel rail pressure) so need to probe them at the +5V pin to see if its getting the right voltage when the fault isnt active, and what sensor is pulling it down when the fault occurs.
Not sure if the no signal from crank sensor may be a red herring though as if its connected on the same part of the loom with the voltage B side, then it might not be getting its signals back to the ECU, thus ECU throws a error for it.

Jack - not sure why the ABS is offline. Maybe the module didnt close down properly when I last accessed it so needs to 'reboot' to stop the communication error.


Did you know the DVOM is just fine & a Scope is unneeded for this test path?

Did you know usually a faulty harness at junction is the cause/chafe point or sensor/consumer & that sometimes isn't on the listed track in WD, this is why I unplug everything and work my way back to the DTC & while verifying each component DTC in VCDS is reset?

Then did you know VCDS blocks can indeed show this type of fault trace with aid of decade box or just clearing and checking for DTC?

Did you know once you isolate the respective tracks you can qualify it further by changing the DTC to check the ECU from OPEN to short to ground or B+ with a decade box too, this way you don't change an ECU by false diagnosis?

All kinds of interesting questions huh?

Did you try communication with the ABS directly?


You have access to a scope? Tap into the ref and see if it's being pulled low, or directly to ground.
You mean back probe as per RTFB and not make holes in wires or damage insulation right?
 
   #11  

PIVOT

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Your meter won't be fast enough to Catch it, but that's not what I meant. Road testing with a scope ANYWHERE on the 5vref B would be enough. Regardless, the crank sensor looks like a hall effect, so a very possible cause
 
   #12  

Jack@European_Parts

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Your meter won't be fast enough to Catch it, but that's not what I meant. Road testing with a scope ANYWHERE on the 5vref B would be enough. Regardless, the crank sensor looks like a hall effect, so a very possible cause
Again he has a DTC in VCDS & which shows the DTC in the controller already, why would he need to qualify the sample rate versus the harness for adequate shield and wire attenuation, what good would measuring a signal with a scope here? :p
 
   #13  

carsey

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Have you any more information on how to check in VCDS these decade boxes? Never heard of them before?

Havent tried a direct communication with the ABS as never realised at the time of the auto scan - fairly confident the only code is the function restricted by codes in other modules message though.

Thing is....it throws this issue very randomly. I did a short trip this morning and put the light on after 10mins driving, went out again and fault come within 30seconds. Drove home after work and car was fine.
 
   #14  

Jack@European_Parts

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Have you any more information on how to check in VCDS these decade boxes? Never heard of them before?

Havent tried a direct communication with the ABS as never realised at the time of the auto scan - fairly confident the only code is the function restricted by codes in other modules message though.

Thing is....it throws this issue very randomly. I did a short trip this morning and put the light on after 10mins driving, went out again and fault come within 30seconds. Drove home after work and car was fine.
Did you read the JPPSG the entire thread all pages?

https://forums.ross-tech.com/showth...essional-Problem-Solver-Guide-quot-JPPSG-quot
 
   #15  

PIVOT

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Again he has a DTC in VCDS & which shows the DTC in the controller already, why would he need to qualify the sample rate versus the harness for adequate shield and wire attenuation, what good would measuring a signal with a scope here? :p
Measuring the 5v ref? with a scope? To ascertain voltage level on the reference line during the event - slightly more help than a fault code with erroneous freeze frame data.

i clearly stated to scope the 5v ref, not the signal? and attenuation? why would he need to attenuate voltage on a 12v system, were talking about a reference voltage line, not collapsing primary fields
 
   #16  

Jack@European_Parts

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Measuring the 5v ref? with a scope? To ascertain voltage level on the reference line during the event - slightly more help than a fault code with erroneous freeze frame data.

i clearly stated to scope the 5v ref, not the signal? and attenuation? why would he need to attenuate voltage on a 12v system, were talking about a reference voltage line, not collapsing primary fields
It's a waste of time & why are you still equivocating and have not posted the requested data in your own ABS thread?
Why do you want to direct a member to use a scope and possibly convince them they should, after they already said they don't have one, plus you can't even derive a login or use the tool or the forum as specified?

KISS method is better and less costly!
 
   #17  

Jack@European_Parts

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In most cases I will always endorse checking or cross checking the diagnostic stack due to tampering or possibly for FOD, right?

When it comes to these type faults & for ref voltage, I have deployed new strategies and because I have found issues in the field to warrant it due to RTFB and stack being purposely vague, haven't you?

Attenuation of the speed ref sensors or for inadequate shield has for a long time, has it not been an issue, so if someone gets a fault I would check harness and change respective sensor if not to hard to get too, wouldn't you and before an expensive ECU?

From 1993 to 1999 when G28 sensors were shielded and encapsulated correctly they hardly ever failed in VAG but as soon as they started making with plastic or smaller size core they have since become an issue, doesn't everyone see this that's been in the game for 35 years?
 
   #18  

PIVOT

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It's a waste of time & why are you still equivocating and have not posted the requested data in your own ABS thread?
Why do you want to direct a member to use a scope and possibly convince them they should, after they already said they don't have one, plus you can't even derive a login or use the tool or the forum as specified?

KISS method is better and less costly!
Because that car's been fixed already. This man is looking for help not a pissing contest; you can attempt to belittle me all you want, but i'm not partaking in a thread highjack.

OP did you get anywhere with the crank sensor as a suspect for pulling ref low?
 
   #19  

Jack@European_Parts

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Because that car's been fixed already. This man is looking for help not a pissing contest; you can attempt to belittle me all you want, but i'm not partaking in a thread highjack.

OP did you get anywhere with the crank sensor as a suspect for pulling ref low?
Yes but you didn't post a final auto-scan or how you fixed it, why?

You are right lets not do that, however, I thought I was giving that help and without a scope because the OP stated he does not have one?

The voltage drop is what is used by the controller to determine a problem in the circuit and the controller sees it or both faults.
 
   #20  

carsey

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Little update...

I did a bit digging today. had a wiggle of all the connectors on the voltage B side of the loom.

Unplugged the EGR valve and never threw a code (probably because the EGR has been mapped out due to previous issue) On the off chance I plugged it back in and the car dropped into limp mode. It did this a couple of times. ive left it unplugged for now and going to run the car over a few days to see if fault crops back up.

The crank sensor i think was just a false positive lead. If the 5V line has dropped down, then chances are the crank sensor has seen a significant drop in voltage to stop it from sending signal, hence why the ECU threw that code up in the scan. Cleared it off and it hasnt come back up 'yet' so probably nothing wrong with the sensor (otherwise it would more than likely happen all the time)

Ill run the car a few days and see what comes up. Hopefully unplugging the EGR sorts the issue out.

Does anyone know if the EGR is prone to condensing up with water inside the little black cap on the top of it? Heard someone mention they were pretty prone to it.
 
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