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08 Audi a3 8P 2.0tdi

Featured Replies

Solved by Fra25

  • Author

Steering wheel symbol illuminated, ESP symbol illuminated. MOT man won’t test it, I had a garage connect their diagnostic equipment - “needs coding, not something we do unfortunately”. I bought it with a faulty OSF window/door - intermittent power, I replaced a broken window regulator and a corroded a-pillar harness socket. I reconnect the battery and the warning lights appear. Any advice whatsoever very much appreciated.

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I had a loose wheel speed sensor that was throwing up similar problems with warning lights, might be worth checking mate.

8 hours ago, daveyboy1967 said:

I had a loose wheel speed sensor that was throwing up similar problems with warning lights, might be worth checking mate.

That's a good point Dave. 

  • Author
On 6/27/2025 at 7:22 AM, Steve Q said:

This could be caused by the battery if it's old and not operating properly. Might be worth having it checked first. 

Thank you. Man at the garage says he’d tested the battery when he read codes, also looks relatively new.

 

11 hours ago, daveyboy1967 said:

I had a loose wheel speed sensor that was throwing up similar problems with warning lights, might be worth checking mate.

I should definitely check those next, thank you.

Edited by Fra25

14 hours ago, daveyboy1967 said:

I had a loose wheel speed sensor that was throwing up similar problems with warning lights, might be worth checking mate.

atleast you can rule out the battery. 

  • Author

I checked sensors, and got good readings on OBD11. I’ve seen forum posts from people with similar symptoms/codes - establishing basic settings for the Steering Angle Sensor is a common solution. Ive tried the whole standard calibration procedure (and a few variations) several times to no effect. The steering angle data is constant at 0 (live torque and rate data is good). Since my calibration attempts the steering is now much heavier, engine idle speed increased, and a new fault code 01309 Power Steering Control Module.

In my case the sensor was functioning perfectly and would give good readings, it just wasn't positioned correctly in relation to the wheel and so would throw up errors while the car was being driven.

Edited by daveyboy1967
Edited for clarity.

  • Author
31 minutes ago, daveyboy1967 said:

In my case the sensor was functioning perfectly and would give good readings, it just wasn't positioned correctly in relation to the wheel and so would throw up errors while the car was being driven.

Thank you. I’ve exhausted patience with it, I don’t know a lot to do with cars and less with electronics. Will likely be gone for scrap. Appreciate your replies.

  • Author
  • Solution

SOLVED. I found an index for code in the Steering Column control unit, 3 of the values were incorrect, rewritten - warning symbols have disappeared and power steering is working again. Thank you for the advice.

16 minutes ago, Fra25 said:

SOLVED. I found an index for code in the Steering Column control unit, 3 of the values were incorrect, rewritten - warning symbols have disappeared and power steering is working again. Thank you for the advice.

Fantastic news, thank you for updating us 🙂 

Brilliant mate, glad you stuck with it and got it sorted. Well done.

  • Author
4 minutes ago, Steve Q said:

Fantastic news, thank you for updating us 🙂 

 

2 minutes ago, daveyboy1967 said:

Brilliant mate, glad you stuck with it and got it sorted. Well done.

Thank you.

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