VW T5 DPF Pressure Sensor Short To Ground

   #1  

Fearns

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Can anyone help with the following DPF sensor error, I've replaced the sensor, blown through the pipes to confirm they are not blocked, authorised the new sensor through VCDS and done a DPF regen.

Every third start of the engine after clearing the error throws up the Short to GND error.

Below is the VCDS Print.

Code:
5262 - Diesel Particle Filter; Differential Pressure Sensor

P2454 00 [038] - Short to GND

Intermittent - Not Confirmed - Tested Since Memory Clear

Freeze Frame:

Fault Status: 00000001

Fault Priority: 2

Fault Frequency: 1

Mileage: 154014 km

Date: 2020.01.31

Time: 13:55:54

Engine speed: 0.00 /min

Normed load value: 0.0 %

Vehicle speed: 0 km/h

Coolant temperature: 50 °C

Intake air temperature: 17 °C

Ambient air pressure: 990 mbar

Voltage terminal 30: 12.280 V

Unlearning counter according OBD: 40

Sensor for particle filter differential press: raw value: -214 hPa

Particle filter: difference pressure: 0 hPa

Particle filter: offset for differential press.: -75 hPa

Particle filter: differential pressure: dynamic offset: 0 hPa

Outside air temperature: 13.0 °C

Particle filter: soot mass measured: -3.28 g

Particle filter: soot mass calculated: 3.18 g

Readiness: 0 0 0 0 0
 
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   #2  

PetrolDave

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We'll need to see a full unedited VCDS Auto-Scan. BTW just copy and paste the saved .txt file as explained in my signature.
 
   #3  

Fearns

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Code:
Friday,31,January,2020,17:07:26:09734
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 19.6.2.0 (x64)  HEX-V2 CB: 0.4508.4
Data version: 20190930 DS308.0
www.Ross-Tech.com


Mileage: 154010km-95697mi   Repair Order: 


Chassis Type: 6N0
Scan: 01 03 04 09 15 17 19 25 56 0B

   Mileage: 154010km-95697miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
56-Radio -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CAAB)       Labels:. 03L-906-022-CAA.clb
   Part No SW: 03L 906 022 CD    HW: 03L 907 309 K
   Component: R4 2,0L EDC   X41 9970  
   Revision: 26X41---    Serial number: 00000000000000
   Coding: 01114010230400080000
   Shop #: WSC 26214 051 00000
   ASAM Dataset: EV_ECM20TDI01103L906022CD 002014
   ROD: EV_ECM20TDI01103L906019AM_002.rod
   VCID: 698FBACB69FB822F7E9-803C

1 Fault Found:
5262 - Diesel Particle Filter; Differential Pressure Sensor 
          P2454 00 [038] - Short to GND
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 154014 km
                    Date: 2000.00.00
                    Time: 00:00:00

                    Engine speed: 532.50 /min
                    Normed load value: 100.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 86 °C
                    Intake air temperature: 37 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 11.180 V
                    Unlearning counter according OBD: 40
                    Sensor for particle filter differential press: raw value: -214 hPa
                    Particle filter: difference pressure: 0 hPa
                    Particle filter: offset for differential press.: -75 hPa
                    Particle filter: differential pressure: dynamic offset: 0 hPa
                    Outside air temperature: 22.5 °C
                    Particle filter: soot mass measured: -3.28 g
                    Particle filter: soot mass calculated: 0.93 g

Readiness: 0 0 0 0 1 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (-----)       Labels: 7E0-907-37x-MK25AXT.clb
   Part No SW: 7E0 907 379 G    HW: 7E0 907 379 E
   Component: ESP MK25A XT  H43 0105  
   Revision: 00H43001    
   Coding: 508724AD89A40A9524A29178A96710
   Shop #: WSC 02736 790 49152
   VCID: 363521B768451DD723B-8062

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7H0-937-08x-09.clb
   Part No SW: 7H0 937 086 F    HW: 7H0 937 086 
   Component: BCM T5GP M++4 H47 0230  
   Revision: BM047001    Serial number: 0395 038110262
   Coding: A0A0303A0E212031000008103C2B8C100000430F60060000300000000000
   Shop #: WSC 02734 790 00000
   VCID: 363521B768451DD723B-8062

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 B    HW: 7E0 959 655 B
   Component: VW10Airbag009 H06 0013  
   Revision: --------    Serial number: 003HL003X5XT
   Coding: 000000000000000000000000000000003039
   Shop #: WSC 02734 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVN750 A01026
   ROD: EV_AirbaVW10BPAVN750_VW12.rod
   VCID: 353726BB75C316CF2A1-8060

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 7E0 920 960 C    HW: 7E0 920 960 C
   Component: KOMBI         H04 0204  
   Serial number: 00000000000000
   Coding: 460200
   Shop #: WSC 02736 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 290FFACBA97B422FBE9-807C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
   Part No SW: 6N0 909 901     HW: 7H0 937 086 
   Component: GW-K-CAN TP20 0230  
   Coding: 042300
   Shop #: WSC 02734 790 00000
   VCID: 70B9D7AF4AA173E7397-8024

1 Fault Found:
01336 - Company Data Bus for Comfort System 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 1
                    Fault Frequency: 3
                    Reset counter: 205
                    Mileage: 154014 km
                    Time Indication: 0
                    Date: 2014.06.23
                    Time: 16:08:10


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234 
   Component: IMMO          H04 0204  
   Serial number:               
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
   ROD: EV_Immo_UDS_VDD_RM09.rod
   VCID: 6A8DC5C76CFD8937773-803E

No fault code found.

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

End-----(Elapsed Time: 01:15, VBatt start/end: 13.9V/0.0V. VIgn 0.0V)------
 
   #5  

Fearns

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Thanks, full scan above.
 
   #6  

Uwe

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1 Fault Found:
5262 - Diesel Particle Filter; Differential Pressure Sensor
P2454 00 [038] - Short to GND
Got wiring diagrams for this vehicle?

The first thing to do with a "Short to GND" code is look for a missing voltage supply at the sensor or actuator that's flagged in the fault.

-Uwe-
 
   #7  

Fearns

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I don't have a wiring diagram, I've removed the multiplug on the sensor, there are 3 wires numbered 1, 2 and 3.

With the earth probe on 2 and positive on 1 there is no reading.
With the earth probe on 2 and the positive on 3 it reads just over 5 volts.

I did read somewhere that 5 volts was correct but i dont know what pin 1 should read.
 
   #8  

MartinsX

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Hi!
If You want to diagnose and repair Your vehicle Yourself, You need WD and other repair information. The best source is ERWIN.
 
   #10  

burdabur

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Bringing an old thread back from the dead here, curious as to whether you got the bottom of this issue? I have the same issue after replacing the sensor, wondering if you found something in software before I start in about the wiring?
 
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