HI, recently I have had the engine management light come on followed by a stutter in power, this was then followed by the ASR and ECP warning lights coming on sending me in to limp mode. When the engine is turned off sometimes the lights go out but they always come back on. Ive had a read from a friends garage and codes come back as p1171 and p0321, any ideas anyone. The car has had a stage one revo remap and the usual upgrades to airfilter and intake pipe but this is not new to the car. I'm doing my best to avoid VW prices so any advice will be gratefully received.

P1171 17579/P1171/004465 - Angle Sensor 2 for Throttle Actuator (G188) Implausible Signal

Possible Symptoms

Malfunction Indicator Lamp (MIL) active

Possible Causes

Angle Sensors 1/2 for Throttle Actuator (G187/G188) faulty

Power Supply for Angle Sensors 1/2 for Throttle Actuator (G187/G188) faulty

Wiring/Connector(s) from/to Angle Sensors 1/2 for Throttle Actuator (G187/G188) faulty

Possible Solutions

Check Angle Sensors 1/2 for Throttle Actuator (G187/G188)

See Measuring Value Blocks (MVB), usually MVB 062

Power Supply for Angle Sensors 1/2 for Throttle Actuator (G187/G188) faulty

Wiring/Connector(s) from/to Angle Sensors 1/2 for Throttle Actuator (G187/G188) faulty

P0321 16705/P0321/000801 - Engine Speed Sensor (G28): Implausible Signal

Possible Symptoms

Engine shuts off

Engine doesn't start

Speedometer inoperative

Glow Plug Indicator Lamp (K29) flashes

Possible Causes

Engine Speed Sensor (G28) loose

Engine Speed Sensor (G28) faulty

Possible Solutions

Check Engine Speed Sensor (G28)

Special Notes

The Engine Speed Sensor (G28) is also used as a reference sensor for the crankshaft position and correlates with the Camshaft Position Sensor Bank 1 (G40) and Camshaft Position Sensor Bank 2 (G163).

When found in a VW Golf/Jetta (1J/9M) or Audi A3 (8L) with 1.9l TDI-PD (AXR), check TPI 2007067 which explains issues with electro magnetic interference. A modification to the wiring will fix this problem, extensive details can be found in the named TPI. Even though this TPI was originally released for VW Golf/Jetta (1J/9M), a customer of ours came across the same issue on an Audi A3 (8L).

When found in a 2004 VW Golf, Jetta, or New Beetle with 1.9l TDI-PD (BEW), check for TSB 2010461 (01-07-45 formerly 97-05-03) or 201463 (01-07-44 formerly 97-05-04) calling for a flash update to the ECU and a secondary ground installation.

Edited 12 September, 201114 yr by missingmyvrs

Cheers for the info, its started to run rough at idle now and the ecp and asr light come on as soon as i hit 3000rpm, this put it in to limp mode, is this all consistant with the same codes? Does it sound potentially expensive? Ive booked it in to The Phirm VW (hook) specialists as recommended by Revo, any thought??