2005 Passat TDI BHW G28 Sensor Crankshaft speed sensor

[phall1059]

No start. Scan with VCDS does show fault code for failed G28. Multimeter test shows failed sensor. Pin 2 - 3 show infinite resistance. specified 480 - 1000 ohms. short pin 1 - 3. pin 3 - 2 infinite resistance. Question: Why no DTC are shown? Is the programing code in the ECU corrupted?

 

[PetrolDave]

Question: Why no DTC are shown? Is the programing code in the ECU corrupted?

Even though no fault codes are shown a full unedited VCDS Auto-Scan is needed as this will help the experts answer your questions.

BTW has your Passat been 'chip tuned' (either by you or any previous owner)? This can often be the cause of DTCs not being shown.

 

[Uwe]

Scan with VCDS does show fault code for failed G28.

Why no DTC are shown?

These two statements seem contradictory. Perhaps you could elaborate?

-Uwe-

 

[phall1059]

These two statements seem contradictory. Perhaps you could elaborate?

-Uwe-

Hi Uwe,
Sorry my mistake . It should read does not show DTC.

Even though no fault codes are shown a full unedited VCDS Auto-Scan is needed as this will help the experts answer your questions.

BTW has your Passat been 'chip tuned' (either by you or any previous owner)? This can often be the cause of DTCs not being shown.

I know the crankshaft sensor is defective because I tested it with a multimeter. But I do not understand why VCDS does not show any DTC related to this failed sensor (G28)

 

[phall1059]

Even though no fault codes are shown a full unedited VCDS Auto-Scan is needed as this will help the experts answer your questions.

BTW has your Passat been 'chip tuned' (either by you or any previous owner)? This can often be the cause of DTCs not being shown.

Hi,

 

[phall1059]

Hi PetrolDave,
The ECU is stock. It is not tuned. I am the original owner. The ECU was flashed by the dealer so that the 5 volt steel tip glow plugs could be switched out for the 7 volt ceramic tip glow plugs I believe on a recall.
Thanks.
P. Hall

 

[Jack@European_Parts]

Where is the scan?

 

[phall1059]

Where is the scan?

Hi Jack,
I will post tomorrow.
Thanks,
P. Hall

 

[phall1059]

Hi Jack,
Here is the attached scan. Please ignore the fault codes as I have taken things apart to replace crankshaft speed sensor. Tomorrow I will see if I can get the passat to start. Too dark now to see.
Thanks,
P. Hall

Wednesday,24,February,2021,16:17:27:54876
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: WVWCE63B15E166827   License Plate:


Chassis Type: 3B (3B - VW Passat B5 (1997 > 2005))
Scan: 01 02 03 08 15 16 17 19 35 36 37 46 47 55 56 57 58 75 76 77
        

VIN: WVWCE63B15E166827  
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 038-906-016-BHW.lbl
   Part No SW: 038 997 016 T    HW: 028 101 198 2
   Component: R4 2,0L EDC G000AG  0314 
   Revision: 12345678    Serial number: VWZ7Z0E2003470
   Coding: 0150034
   Shop #: WSC 03107 999 84523
   VCID: 2F3B18F6AB0029B3DA8-5160

6 Faults Found:
19558 - Motor for Intake Manifold Flap (V157)
            P3102 - 000 - No Signal
16791 - EGR Sensor 2
            P0407 - 000 - Signal too Low
16497 - Intake Air Temp. Sensor (G42)
            P0113 - 000 - Signal too High
18000 - Altitude Sensor / Boost Pressure Sensor
            P1592 - 000 - Implausible Correlation
19557 - Motor for Intake Manifold Flap (V157)
            P3101 - 000 - Open or Short to Ground
16622 - Manifold Pressure / Boost Sensor (G31)
            P0238 - 000 - Signal too High
Readiness: 0 0 0 0 0

All of the above faults are because I have taken apart connections etc. to be able to make room for replacing crank sensor.

 

[Jack@European_Parts]

So car is modified with delete FOD tuning?

Did you log G28 in VCDS when cranked?

 

[phall1059]

Hi Jack,
No, car ECU is not modified. The ecu is stock. Not sure what you mean by log G28 when cranked. The car is in a no start condition.
Thanks ,
P. Hall

 

[Jack@European_Parts]

Hi Jack,
No, car ECU is not modified. The ecu is stock. Not sure what you mean by log G28 when cranked. The car is in a no start condition.
Thanks ,
P. Hall

That's debatable Phall ----- US or Canada OBD2 Specs say otherwise!
Clear faults and post a new complete auto-scan unedited please, did you know your thread is inconsistent as Uwe has aforementioned?

Subsystem Redundancy check for FOD in process!

Better JPPSG huh?

Sticky - Jacks Professional Problem Solver Guide. "JPPSG"

Jacks Professional Problem Solver Guide. "JPPSG" Make / Model / Year / Edition. Step 1 Tag of PR-Build data picture posted ( Last 6 of VIN can be omitted for privacy ) Step 2 Status of car stock or modified in any way? If so list! Step 3 "VCDS" COMPLETE Auto-Scan in code tags! Step 4...

forums.ross-tech.com

G28 is the "engine speed sensor" or "RPM ref sensor" when referencing the RTFB ( Read The Factory Book ) in WD = Wire Diagrams!

 

[phall1059]

Hi Jack,
Thanks for your suggestions.
Kind Regards,
P. Hall

 

[PetrolDave]

Address 01: Engine Labels: 038-906-016-BHW.lbl
Part No SW: 038 997 016 T HW: 028 101 198 2
Component: R4 2,0L EDC G000AG 0314
Revision: 12345678 Serial number: VWZ7Z0E2003470
Coding: 0150034
Shop #: WSC 03107 999 84523
VCID: 2F3B18F6AB0029B3DA8-5160

Seems unlikely that VAG would use this as the revision code, which makes Jacks suggestion that the ECU has been modified seem very probable.

 

[Jack@European_Parts]

That and the fact the EGR is ready & before the engine even runs to check it or after re-flash!

This is what is NOT displayed!

Are you going to log G28 OP?

 

[Uwe]

Seems unlikely that VAG would use this as the revision code,

I have seen stranger things coming from bone-stock control modules.

-Uwe-

 

[phall1059]

Hi Uwe,
The ECU was reflashed at the VW dealer for the 5 Volt glow plugs. As far as I am aware I have never had the ECU tune or flashed. I wonder if the VW dealer made some sort of error.
Regards,
P. Hall