VW Sharan AdBlue heater problem

   #1  

automech

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VCDS Serial number
C?ID=14925
Hello,

I'm having following DTC on VW Sharan 2.0TDI:

9656 - Control Circuit for Reductant Tank Heating
P202B 00 [101] - Short to GND

According to WD, this means something is wrong with the Z102 element which heats up the reductant in tank, so I dissasembled the rear left mudguard, check the connectors, voltages, also I swaped procesor mounted to the tank which controls AdBlue tank elements, efect is the same, fault stored.

Things I checked so far:

Fuses- OK
Wiring from ECU to processor, done by VAS procedure- OK
Processor- OK (swaped unit reacts same as original)
Heating element Z102 resistance- 10 Ohms??? (other two, the Z103/Z104 4.7 Ohms)

Tommorow I'm disassembling rear bumper to get to the harness of the tank to take a look at it, I don't think that the problem is the heating element itself, but I don't have more ideas.

Does any of you came across with same problem? Or maybe the 10 Ohm resistance means that the heater is faulty?? Please help if anyone have some ideas.

Code:
Wednesday,17,February,2016,22:04:06:49923
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 15.7.3.0 (x64)
Data version: 20151216
www.Ross-Tech.com

Workshop Code: 444 00001 012345

VIN: WVWZZZ7NZBV034466   License Plate: 
Mileage: 270380km-168006mi   Repair Order: 



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


Chassis Type: 7N (7N0)
Scan: 01 03 05 08 09 10 15 16 17 18 19 25 2B 37 42 44 46 52 53 56
          61 62 6D 72 BE BF

VIN: WVWZZZ7NZBV034466   Mileage: 270380km-168006miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
18-Aux. Heat -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
2B-Steer. Col. Lock -- Status: OK 0000
37-Navigation -- Status: Cannot be reached 1100
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: Malfunction 1010
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
BE-Sliding Door Rear Left -- Status: OK 0000
BF-Sliding Door Rear Right -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CFFA)       Labels: 03L-906-018-CFF.clb
   Part No SW: 03L 906 018 H    HW: 03L 907 309 Q
   Component: R4 2,0L EDC   H24 9958  
   Revision: 44H24---    Serial number:               
   Coding: 0019001A042401080000
   Shop #: WSC 08744 001 1048576
   ASAM Dataset: EV_ECM20TDI01103L906018H 003009
   ROD: EV_ECM20TDI01103L906018F_VW36.rod
   VCID: 2F677AC076DE4F46D8-807A

1 Fault Found:
9656 - Control Circuit for Reductant Tank Heating 
          P202B 00 [101] - Short to GND
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 270389 km
                    Date: 2016.02.17
                    Time: 21:59:20

Readiness: 0 0 0 0 1 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 7N0-614-109.clb
   Part No SW: 7N0 614 109 M    HW: 7N0 614 109 M
   Component: J104   C3 450M VDDF 0009  
   Revision: --H07---    Serial number: 00000003919780
   Coding: 0018967
   Shop #: WSC 00020 790 00000
   VCID: 377742A0468E878680-8062

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels: 5K0-959-434.clb
   Part No SW: 5K0 959 434 A    HW: 5K0 959 434 A
   Component: VWKESSYPQ35GP 085 0802  
   Revision: 00085000    Serial number: 0144933323
   Coding: 03100C
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_KESSY_PQ35GP A01018
   ROD: EV_KESSY_PQ35GP.rod
   VCID: 336F76B09AF66BA6BC-8066

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels: 5K0-907-044.clb
   Part No SW: 5K0 907 044 F    HW: 5K0 907 044 F
   Component: Clima-Sharan  H11 0104  
   Revision: 00002001    
   Coding: 0000000109
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_ClimatronicSharan A01005
   ROD: EV_ClimaAutoSharaBasis_VW36.rod
   VCID: 2E5967C471D4464ED3-807A

   Slave 1: 
   Subsystem 1 - Part No SW: 7N0 907 049 B    HW: 7N0 907 049 B
   Component: KBT-H  004 0102 
   Serial number: 20110315000000018777

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels: 1K0-937-08x-09.clb
   Part No SW: 5K0 937 084 F    HW: 5K0 937 084 F
   Component: BCM PQ35 B    011 0046  
   Revision: BA011001    
   Coding: 40590A3B89251AC0500800C0140000E443511308466D29F264808720A2C1
   Shop #: WSC 00020 790 00000
   VCID: 356B48A89C82759692-8060

   Subsystem 1 - Part No SW: 7N1 955 119 A    HW: 7N1 955 119   Labels: 1KX-955-119.CLB
   Component: WWS    110314  31  0031 
   Coding: 004DBD

   Subsystem 2 - Part No SW: 7N0 955 559     HW: 7N0 955 559   Labels: 7N0-955-559.CLB
   Component: RLFS  021 0022 
   Coding: 0380BB

2 Faults Found:
02394 - Parking Light Left Front (M1) 
            010 - Open or Short to Plus
             Freeze Frame:
                    Fault Status: 01101010
                    Fault Priority: 2
                    Fault Frequency: 8
                    Reset counter: 223
                    Mileage: 270285 km
                    Time Indication: 0
                    Date: 2016.02.16
                    Time: 10:34:00

             Freeze Frame:
                        Term 15 On
                    Voltage: 12.35 V
                        ON
                        ON
                        ON
                        OFF
                        OFF

02395 - Parking Light Front Right (M3) 
            010 - Open or Short to Plus - Intermittent
             Freeze Frame:
                    Fault Status: 00101010
                    Fault Priority: 2
                    Fault Frequency: 3
                    Reset counter: 8
                    Mileage: 270316 km
                    Time Indication: 0
                    Date: 2016.02.17
                    Time: 10:32:42

             Freeze Frame:
                        Term 15 On
                    Voltage: 11.80 V
                        ON
                        ON
                        ON
                        OFF
                        OFF


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels: 1Q0-919-475.clb
   Part No SW: 7N0 919 475     HW: 7N0 919 475 
   Component: PARKHILFE 8K  H04 0010  
   Revision: --------    Serial number: 28291106336352
   Coding: 108001
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_EPHVA18VW4280000 001005
   ROD: EV_EPHVA18VW4280000.rod
   VCID: 78F5819CC31048FE49-802C

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels: 5K0-959-655.clb
   Part No SW: 7N0 959 655 B    HW: 7N0 959 655 B
   Component: VW10Airbag012 H07 0013  
   Serial number: 003GFP49A152
   Coding: 003132
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_AirbaVW10TS6VW428 A01002
   ROD: EV_AirbaVW10TS6VW428.rod
   VCID: 3E795784A1B4B6CE43-806A

   Crash sensor for side airbag; driver side: 
   Subsystem 1 - Part No SW: ---            HW: ---        
   Component: S.Sens.Fahr.V  --- ---  
   Serial number: 3493ETS6097A3BB13DD5
   Coding: 000000

   Crash sensor for side airbag; front passenger side: 
   Subsystem 2 - Part No SW: ---            HW: ---        
   Component: S.Sens.Beif.V  --- ---  
   Serial number: 3503ETS6069B9C313DD$
   Coding: 000000

   Crash sensor for side airbag; rear; driver side: 
   Subsystem 3 - Part No SW: ---            HW: ---        
   Component: S.Sens.Fahr.H  --- ---  
   Serial number: 3513ETS60BCA0BB13DD2
   Coding: 000000

   Crash sensor for side airbag; rear; passenger side: 
   Subsystem 4 - Part No SW: ---            HW: ---        
   Component: S.Sens.Beif.H  --- ---  
   Serial number: 3523ETS6077D8C3139D,
   Coding: 000000

   Crash sensor for front airbag; driver side: 
   Subsystem 5 - Part No SW: ---            HW: ---        
   Component: F.Sens.Fahr  --- ---  
   Serial number: 35540TS60B7D6B413DDX
   Coding: 000000

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels: 5K0-953-569.clb
   Part No SW: 5K0 953 501 BM    HW: 5K0 953 569 L
   Component: LENKS.MODUL   014 0140  
   Revision: FF010040    Serial number: 20110316300463
   Coding: 1102240000
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_VW360SteerWheelUDS A03004
   ROD: EV_VW360SteerWheelUDS.rod
   VCID: 76E98FA4C9043E8E5B-8022

   Multi Function Steering Wheel Control Module: 
   Subsystem 1 - Part No SW: 3C8 959 537 D    HW: 3C8 959 537 D  Labels: 3C8-959-537.CLB
   Component: E221__MFL-TK6  H06 0022 
   Coding: E20000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels: 5K0-920-xxx-17.clb
   Part No SW: 7N0 920 870 A    HW: 7N0 920 870 A
   Component: KOMBI         H20 0420  
   Serial number: 00000000000000
   Coding: 140F00
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
   ROD: EV_Kombi_UDS_VDD_RM09_SK35.rod
   VCID: 306579BC6BE050BEC1-8064

No fault code found.

-------------------------------------------------------------------------------
Address 18: Aux. Heat        Labels: 1K0-815-071.clb
   Part No: 7N0 963 271 C
   Component: Zuheizer        051 2730  
   Revision: 00051000    Serial number: 09022126000000
   Coding: 0000111
   Shop #: WSC 12234 778 12300
   VCID: 346D75AC57F86C9EA5-8060

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels: 7N0-907-530-V2.clb
   Part No SW: 7N0 907 530 D    HW: 1K0 907 951 
   Component: J533  Gateway H35 0614  
   Revision:   H35       Serial number: 270311F2001580
   Coding: 468002
   Shop #: WSC 00020 790 00000
   VCID: 31637CB868EA59B6CE-8064

2 Faults Found:
01300 - Control Module for Navigation with CD-Rom (J401) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 218
                    Mileage: 270285 km
                    Time Indication: 0
                    Date: 2016.02.16
                    Time: 10:17:34

01304 - Radio 
            004 - No Signal/Communication - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 2
                    Fault Frequency: 25
                    Reset counter: 7
                    Mileage: 270285 km
                    Time Indication: 0
                    Date: 2016.02.16
                    Time: 10:19:41


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels: 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234 
   Component: IMMO          H20 0420  
   Serial number:               
   Coding: 000007
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
   ROD: EV_Immo_UDS_VDD_RM09_SE25.rod
   VCID: 6AD1ABD48DBCEA6ECF-803E

No fault code found.

-------------------------------------------------------------------------------
Address 2B: Steer. Col. Lock (J764)       Labels: 5K0-905-861.clb
   Part No SW: 5K0 905 861 A    HW: 5K0 905 861 A
   Component: ELV-PQ35      H20 0230  
   Revision: 00000000    Serial number: 11000077906001
   Coding: 4100000000000000
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_ELVMarquMPVW36X A01001
   ROD: EV_ELVMarquMPVW36X.rod
   VCID: 2E5967C471D4464ED3-807A

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation
Cannot be reached

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels: 7N0-959-793.clb
   Part No SW: 7N0 959 793 E    HW: 7N0 959 793 A
   Component: TSG FA        H04 0400  
   Revision:             Serial number: 0000113752277 
   Coding: 01113E20D000411011
   Shop #: WSC 00020 790 00000
   VCID: 448D256CC758DC1E15-8010

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 5N1-909-144.clb
   Part No SW: 5N1 909 144 L    HW: 5N1 909 148 G
   Component: J500__APA-BS KL.323 0802  
   Revision: 1AH03729    Serial number: 00110690116601
   Coding: 0000258
   Shop #: WSC 00020 790 00000
   VCID: 3B7F5E907AA6A3E664-806E

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels: 7N0-959-792.clb
   Part No SW: 7N0 959 792 E    HW: 7N0 959 792 A
   Component: TSG BF        H04 0400  
   Revision:             Serial number: 0000113732962 
   Coding: 01113E20DE00411011
   Shop #: WSC 00020 790 00000
   VCID: 438F2670C256DB262C-8016

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 3AA-907-801.clb
   Part No SW: 3AA 907 801 E    HW: 3AA 907 801 E
   Component: J540 EPB4  VW-55183 0007  
   Revision:   H18       Serial number: 00000000249979
   Coding: 0024066
   Shop #: WSC 00020 790 00000
   VCID: 336F76B052F66BA6BC-8066

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels: 1K0-907-534.clb
   Part No SW: 7N0 907 534     HW: 1K0 907 951 
   Component: Batt.regelung H35 0614  
   Serial number: 270311F2001580
   Coding: 030B185A
   Shop #: WSC 00020 790 00000
   VCID: 71E3BCB8A86A19B68E-8024

   Subsystem 1 - Part No SW: 1K0 915 181 F    HW: 1K0 915 181 A
   Component: J367-BDM  H07 0150 

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels: 7N0-959-794.clb
   Part No SW: 7N0 959 794 F    HW: 7N0 959 795 B
   Component: TSG HL        H03 0400  
   Revision:             Serial number: 0000113867786 
   Coding: 01007C200000411001
   Shop #: WSC 00020 790 00000
   VCID: 46893F64F164EE0E0B-8012

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (----)       Labels: 7N0-959-107.clb
   Part No SW: 7N0 959 107 B    HW: 7N0 959 107 A
   Component: HDSG-Modul    H11 0803  
   Revision: 41011001    Serial number: 069100188
   Coding: 0733334002
   Shop #: WSC 00020 999 00000
   ASAM Dataset: EV_HDSGVW428 201133
   ROD: EV_HDSGVW428_SE36.rod
   VCID: 36694FA489847E8E9B-8062

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels: 7N0-959-794.clb
   Part No SW: 7N0 959 794 F    HW: 7N0 959 795 B
   Component: TSG HR        H03 0400  
   Revision:             Serial number: 0000113649907 
   Coding: 01007C200000411001
   Shop #: WSC 00020 790 00000
   VCID: 46893F64F164EE0E0B-8012

No fault code found.

-------------------------------------------------------------------------------
Address BE: Sliding Door Rear Left (J558)       Labels: 7N0-959-244.clb
   Part No SW: 7N0 959 244     HW: 7N0 959 244 
   Component: Schiebetuer_l 005 2213  
   Serial number: 11037024
   ASAM Dataset: EV_AST A03002
   ROD: EV_AST.rod
   VCID: 76E98FA4C9043E8E5B-8022

No fault code found.

-------------------------------------------------------------------------------
Address BF: Sliding Door Rear Right (J731)       Labels: 7N0-959-244.clb
   Part No SW: 7N0 959 244     HW: 7N0 959 244 
   Component: Schiebetuer_r 005 2213  
   Serial number: 11036793
   ASAM Dataset: EV_AST A03002
   ROD: EV_AST.rod
   VCID: 76E98FA4C9043E8E5B-8022

No fault code found.

End-------------------------(Elapsed Time: 03:42)--------------------------
 
   #2  

Jack@European_Parts

NostraJackAss
Joined
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VCDS Serial number
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Get WD and trace wiring to reluctant sensor.........verify short to ground.

Further take variable resistor, and simulate a sensor while observing VCDS blocks and DTC memory being able to be cleared.

FYI : Reluctant likes to crystalize and becomes conductive crating false shorts.
 
   #3  

automech

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I took off the tank, AdBlue is clear, no crystalisation. I have measured all wires on the tank, checked the car wiring once again, nothing. Any other ideas?? Change whole tank???
 
   #5  

automech

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I think, I found the source of problem, if it confirms, I'll let know tommorow.

And yes, if processor is unplugged the codes change to open circuit.
 
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