P0234 Overboost code on 2009 Jetta CBEA TDI

Allen Vos

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Code:
Tuesday,12,January,2021,11:50:24:33238
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.12.0.1 (x64)  HEX-V2 CB: 0.4529.4
Data version: 20201125 DS322.1
www.Ross-Tech.com


VIN: 3VWTL71K89M263079   License Plate:


Chassis Type: 1K (1K0)
Scan: 01 03 08 09 0F 15 16 17 19 1C 25 42 44 46 52 62 72

VIN: 3VWTL71K89M263079   Mileage: 288110km-179023miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
0F-Digital Radio -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
1C-Position Sensing -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CBE)       Labels: 03L-906-022-CBE.clb
   Part No SW: 03L 997 016 N    HW: 03L 906 022 J
   Component: R4 2,0L EDC G000SG  8680 
   Revision: 12H01---    Serial number: VWX7Z0H524I095
   Coding: 0050072
   Shop #: WSC 84224 299 591528
   VCID: 3D273EB08179B383584-8068

1 Fault Found:
000564 - Boost Pressure Regulation
               P0234 - 000 - Limit Exceeded (Overboost Condition) - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 2
                    Fault Frequency: 7
                    Reset counter: 255
                    Mileage: 287778 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 11:59:40

             Freeze Frame:
                    RPM: 2530 /min
                    Speed: 132.0 km/h
                    Load: 32.2 %
                    Absolute Pres.: 1591.2 mbar
                    Absolute Pres.: 1999.2 mbar
                    Lambda: 33.9 %
                    Lambda: 33.9 %

Readiness: 0 1 0 0 1

-------------------------------------------------------------------------------
Address 03: ABS Brakes (-----)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 AN    HW: 1K0 907 379 AN
   Component: ESP MK60EC1   H45 0107 
   Revision: 00H45001   
   Coding: 113B400D492700FE880C02E9921D00423000
   Shop #: WSC 41669 001 104857
   VCID: 7EA5F9BCC0FF689B01E-802A

1 Fault Found:
01826 - Sensor for Steering Angle (G85); Supply Voltage Terminal 30
            000 - - - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 2
                    Fault Frequency: 3
                    Reset counter: 168
                    Mileage: 285096 km
                    Time Indication: 0

             Freeze Frame:
                    Count: 0
                    Count: 32768
                    Count: 4608
                    Count: 294
                    Count: 51534
                    Count: 0
                    Count: 0
                    Count: 0


-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1K0-820-047.lbl
   Part No SW: 1K0 820 047 JE    HW: 1K0 820 047 JE
   Component: Climatic PQ35   143 1313 
   Revision: 00143033    Serial number: 00000000000000
   Shop #: WSC 00000 000 00000
   VCID: 70B9D78486AB0EEB832-8024

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 3C0-937-049-30-M.lbl
   Part No SW: 3C8 937 049 D    HW: 3C8 937 049 D
   Component: Bordnetz-SG     H54 2602 
   Revision: 00H54000    Serial number: 00000009264211
   Coding: 10018E234004100007140000001400000008730B5C000120000000000000
   Shop #: WSC 53316 000 1048576
   VCID: 323D1D8C48277CFBB56-8066

   Subsystem 1 - Part No: 1K1 955 119 E  Labels: 1KX-955-119.CLB
   Component: Wischer 190309 021  0501 
   Coding: 00038805
   Shop #: WSC 53316 

1 Fault Found:
01501 - Bulb for Blinkers; Rear Left (M6)
            012 - Electrical Fault in Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101100
                    Fault Priority: 2
                    Fault Frequency: 8
                    Reset counter: 144
                    Mileage: 285534 km
                    Time Indication: 0

             Freeze Frame:
                        ON
                    Voltage: 14.15 V
                        ON
                        ON
                        OFF
                        OFF
                        ON


-------------------------------------------------------------------------------
Address 0F: Digital Radio        Labels: 8E0-035-593-SIR.lbl
   Part No SW: 8E0 035 593 M    HW: 8E0 035 593 M
   Component: SDAR SIRIUS     H07 0150 
   Revision: 00000000    Serial number: AUZ4Z7I0532598
   Coding: 0000102
   Shop #: WSC 00066 000 00000
   VCID: 33331888B73D75F3BE0-8066

3 Faults Found:
00003 - Control Module
            014 - Defective - Intermittent
             Freeze Frame:
                    Fault Status: 00101110
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 6
                    Mileage: 36521 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 14:55:18

02635 - Tuner Not Enabled/Activated
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 61
                    Mileage: 273981 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 22:31:25

01304 - Radio
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 5
                    Fault Frequency: 24
                    Reset counter: 122
                    Mileage: 286667 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 17:17:52


-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 1K0-909-605.lbl
   Part No SW: 1K0 909 605 AC    HW: 1K0 909 605 AC
   Component: 2U AIRBAG VW8R  038 8600 
   Revision: 07038000    Serial number: 003E7M08Y5PW 
   Coding: 0012885
   Shop #: WSC 00066 000 00000
   VCID: 6D87CEF09199E303A84-8038

   Subsystem 1 - Serial number: 6332MSME43511211W

   Subsystem 2 - Serial number: 6342MSME4454272FF

   Subsystem 3 - Serial number: 6351HSME1C0C494FO

   Subsystem 4 - Serial number: 6361HSME1B790871C

   Subsystem 5 - Serial number: 63727SME1B74466BA

   Subsystem 6 - Serial number: 63827SME1B751E617

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 1K0-953-549-MY9.lbl
   Part No SW: 1K0 953 549 CD    HW: 1K0 953 549 CD
   Component: J0527           055 0111 
   Coding: 0000331
   Shop #: WSC 00066 000 00000
   VCID: 76B5E19CE4CF20DB59E-8022

   Subsystem 1 - Part No: XXXXXXXXXXX
   Component: E0221           002 0010

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
   Part No SW: 1K0 920 874 D    HW: 1K0 920 874 D
   Component: KOMBIINSTRUMENT 3HL 2418 
   Revision: V0005000    Serial number: VWX7Z0I224B0EN
   Coding: 0023303
   Shop #: WSC 00066 000 00000
   VCID: 2E0509FC5C1F581BD1E-807A

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 1K0-907-530-V4.clb
   Part No SW: 1K0 907 530 S    HW: 1K0 907 951
   Component: J533  Gateway   H07 0071 
   Revision:   H07 01    Serial number: 180209F2001694
   Coding: E9807F06001102001002
   Shop #: WSC 00066 123 12345
   VCID: 372B2C98A34599D3828-8062

No fault code found.

-------------------------------------------------------------------------------
Address 1C: Position Sensing        Labels: 1Kx-919-xxx-1C.lbl
   Part No SW: 1K5 919 965 A    HW: 1K5 919 965 A
   Component: Kompass         005 0004 
   Revision: 00005000    Serial number: 1293324T413504
   Coding: 0000003
   Shop #: WSC 00066 000 00000
   VCID: 392F2AA095518FA374C-806C

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 1K0 920 874 D    HW: 1K0 920 874 D
   Component: IMMO            3HL 2418 
   Revision: V0005000    Serial number: VWX7Z0I224B0EN
   Shop #: WSC 00000 000 00000
   VCID: 2E0509FC5C1F581BD1E-807A

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1K0 959 701 AC    HW: 1K0 959 793 N
   Component: J386  TUER-SG FT    1519 
   Revision: 72009005    Serial number: 00000805689208
   Coding: 0001205
   Shop #: WSC 00066 000 00000
   VCID: 6FBBD4F89B9511139A8-803A

2 Faults Found:
00932 - Electric Window Motor; Drivers Side (V147)
            005 - No or Incorrect Basic Setting / Adaptation - Intermittent
             Freeze Frame:
                    Fault Status: 00100101
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 154
                    Mileage: 0 km
                    Time Indication: 0

00109 - Left Mirror Turn Signal Lamp (L131)
            012 - Electrical Fault in Circuit
             Freeze Frame:
                    Fault Status: 01101100
                    Fault Priority: 5
                    Fault Frequency: 254
                    Reset counter: 140
                    Mileage: 273981 km
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 C
   Component: EPS_ZFLS Kl. 70     2301 
   Revision: 00H15000   
   Shop #: WSC 02069 000 90108
   VCID: 2A0D05EC60F7343B0D6-807E

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 1K0-959-433-MAX.clb
   Part No SW: 1K0 959 433 CA    HW: 1K0 959 433 CA
   Component:    KSG PQ35 G2  020 0204 
   Revision: 00020000    Serial number: 00000000000000
   Coding: 13900F880106281B0904058FB0880F0488FC00
   Shop #: WSC 03285 999 14509
   VCID: 71BFD2808DA107E38CC-8024

   Subsystem 1 - Component:   Sounder n.mounted     

   Subsystem 2 - Component:       NGS n.mounted     

   Subsystem 3 - Component:      IRUE n.mounted     

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1K0 959 702 AC    HW: 1K0 959 792 N
   Component: J387  TUER-SG BT    1519 
   Revision: 72009005    Serial number: 08120722582603
   Coding: 0001204
   Shop #: WSC 00066 000 00000
   VCID: 70B9D78486AB0EEB832-8024

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 1K0 959 703 AH    HW: 1K0 959 795 T
   Component: J388   TUER-SG HL   1401 
   Revision: 12006001    Serial number: 00000003800031
   Coding: 0001168
   Shop #: WSC 00066 000 00000
   VCID: 76B5E19CE4CF20DB59E-8022

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 1K0 959 704 AH    HW: 1K0 959 794 T
   Component: J389   TUER-SG HR   1401 
   Revision: 12006001    Serial number: 00000003874453
   Coding: 0001168
   Shop #: WSC 00066 000 00000
   VCID: 77ABEC98E3C559D3428-8022

No fault code found.

End----------(Elapsed Time: 01:18, VBatt start/end: 13.9V/14.1V)-----------
Hi All, Happy 2021 and hope everyone is doing well though all the nonsense going on right now.

I have been plagued with the 000564 - Boost Pressure Regulation, P0234 - 000 - Limit Exceeded (Over boost Condition) - Intermittent code for quite some time and I'm starting
to do quite of bit of higher speed driving as of late which is what tends to set this code so I would like to take care of this sooner than later.

It doesn't seem to cause an issue until I am going over 70 MPH and holding a steady speed up a steeper hill or incline. At that point it goes into limp mode and all power is lost and I have to cycle the key to get it out of limp mode and get any power back.

I have done a graph of this and caught it in the action. I have a screenshot of this and will try and figure out how to post it to this thread.

If I go up the same hill under full throttle it will max out the boost at 2300 Mbar and holds a steady boost level with gobs of power and no limp in mode

So I should mention the car has a Malone stage 2 tune with the DPF delete. I also replaced the turbo actuator unit with an aftermarket one about 8 months ago.

When I look at measuring blocks 120-4 with the engine idling its reading .608 volts and with the key on engine off its reading 4.104 volts. I do remember setting this with the adjustment on the turbo actuator rod when I replaced it.

The voltage with the engine off had specified it should be at 3.75 volts. Its a bit high, is that a concern?

I am fully prepared to pull the turbo off this weekend and clean out the variable vanes and file any burrs off them to try and remedy the over boost condition, as I feel at this point this is where the problem lies. I had just wanted to post this to
see if there is something you guys think I might be overlooking.
 

Uwe

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Hi and welcome.

If it were mine, I would log requested vs. actual manifold pressure in MVB Group 011 to see what's going on with it, specifically at the point where it sets a fault and goes into limp mode.

I would also talk to my tuner to see if he has any ideas.

-Uwe-
 

Allen Vos

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I have done exactly that, I have a screen shot of it in PNG format and Im not sure how to post it to the forum? However when the fault happened the actual boost was 400 MBAR higher than the requested boost.
So this tells me the turbo vanes are sticking a bit when the overboost code is set
 

Uwe

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I have a screen shot of it in PNG format and Im not sure how to post it to the forum?

when the fault happened the actual boost was 400 MBAR higher than the requested boost.
OK, it really shouldn't do that, at least not for any length of time.

-Uwe-
 

Allen Vos

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OK, it really shouldn't do that, at least not for any length of time.

-Uwe-
OK, so I was able to post the graph, you can see how the actual boost rose a bit above desired and whats interesting is the MAF curve dropped down before the actual boost dropped down

If you look closely, I was also graphing the N75 duty cycle as well as vehicle speed

I have noticed the desired and actual boost are constantly 200-300 MBAR apart all the time but it wont always set the over boost code until the spread gets larger.

Does this have anything to do with the vehicle having a tune in it?
 
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