My glow plug warning light came on and suddenly the car lacked power. I stopped, switched off the ignition and restarted. Glow plug light still on and down in power. A few miles later the light went out and normal service was resumed. No problems since. VAGCOM revealed the following

Address 01: Engine Labels: Redir Fail!

Part No SW: 03G 906 016 GT HW: 028 101 269 8

Component: R4 2,0L EDC G000SG 8203

Revision: 12345678 Serial number: SKZ7Z0F3720462

Coding: 0000072

Shop #: WSC 73430 790 00000

VCID: 7BFEE46C39FE40C

2 Faults Found:

17082 - Sensor Reference Voltage C

P0698 - 000 - Too Low

Freeze Frame:

RPM: 1260 /min

Torque: 114.0 Nm

Speed: 0.0 km/h

Bin. Bits: 00100000

Bin. Bits: 00100000

Bin. Bits: 00100000

Bin. Bits: 00100000

Bin. Bits: 00100000

16618 - Boost Pressure Regulation

P0234 - 000 - Limit Exceeded (Overboost Condition)

Freeze Frame:

RPM: 2310 /min

Torque: 346.0 Nm

Speed: 95.0 km/h

Load: 82.7 %

Voltage: 13.98 V

Bin. Bits: 00101000

Absolute Pres.: 2386.8 mbar

Absolute Pres.: 2590.8 mbar

Readiness: 0 0 0 0 0

I presume the boost sensor lost its signal and caused the turbo to go into overboost at which point the glowplug light came on and the engine switched to limp home mode. I am hoping that it is nothing more than a dodgy connection. So where exactly is this sensor located on a 2.0 TDI 140 so I can check it. Any help appreciated. Thanks in advance.

My glow plug warning light came on and suddenly the car lacked power. I stopped, switched off the ignition and restarted. Glow plug light still on and down in power. A few miles later the light went out and normal service was resumed. No problems since. VAGCOM revealed the following

Address 01: Engine Labels: Redir Fail!

Part No SW: 03G 906 016 GT HW: 028 101 269 8

Component: R4 2,0L EDC G000SG 8203

Revision: 12345678 Serial number: SKZ7Z0F3720462

Coding: 0000072

Shop #: WSC 73430 790 00000

VCID: 7BFEE46C39FE40C

2 Faults Found:

17082 - Sensor Reference Voltage C

P0698 - 000 - Too Low

Freeze Frame:

RPM: 1260 /min

Torque: 114.0 Nm

Speed: 0.0 km/h

Bin. Bits: 00100000

Bin. Bits: 00100000

Bin. Bits: 00100000

Bin. Bits: 00100000

Bin. Bits: 00100000

16618 - Boost Pressure Regulation

P0234 - 000 - Limit Exceeded (Overboost Condition)

Freeze Frame:

RPM: 2310 /min

Torque: 346.0 Nm

Speed: 95.0 km/h

Load: 82.7 %

Voltage: 13.98 V

Bin. Bits: 00101000

Absolute Pres.: 2386.8 mbar

Absolute Pres.: 2590.8 mbar

Readiness: 0 0 0 0 0

I presume the boost sensor lost its signal and caused the turbo to go into overboost at which point the glowplug light came on and the engine switched to limp home mode. I am hoping that it is nothing more than a dodgy connection. So where exactly is this sensor located on a 2.0 TDI 140 so I can check it. Any help appreciated. Thanks in advance.

My 20 tdi gave the over boost light just after it was serviced. Heard horror stories of jammed turbo vanes etc. that was six months and 5 k miles ago. Had the code removed and made sure the inter cooler pipe was pushed on and it's been fine since

Tom

Sorry, cant help with your exact qustion, but I had the overboost problem on my B5.5 Passat 1.9TD some years ago.

My point is that it was "the sensor" which cost a tenner to replace, and was not casued by the turbo. The VAG dealer replaced the turbo twice under warrenty without finding the problem.

On that car the limphome mode could be overridden by switching off and restarting, which would give anything from another 10mins full power, to 3 hours full power, i.e. enough to complete the journey.