ABS/ESP Light On: Troubleshooting Guide

Hello everyone,

"On my A4 1.9 TDI PD (AJM), the ESP and ABS warning lights repeatedly illuminate during acceleration (around 2500 RPM). There is also significant engine misfiring. After turning off the engine and restarting, the warning lights disappear again (and the problem can be reproduced repeatedly). The error code stored is 18074."

I replaced the glow plug about 6 weeks ago! The vehicle was running fine until yesterday! Yesterday, the problem started again!

Who can help me?

Best regards,

stefan

Replacing the PDE was never going to be successful because the AJM PD wiring is known to be faulty - so the solution lies there.

ok, but why did it then run for about 6 weeks without any problems?
I'll probably have to go back to my mechanic on Monday, whether I like it or not! Unfortunately, I don't have time to do it myself with a wrench. Does it make sense to replace the injectors when changing the fuel lines? (Mileage: 183,000 km)

If there's a fault in the cable harness or corrosion on the connectors, touching the PD (Power Distribution) unit during the replacement process will temporarily clear the issue. However, the corrosion will reoccur, and the problem will return.

...but it's important to remember that this is just a possible scenario, not a general one.

I had a problem with the wiring harness on an AXR engine, but the ABS/ESP light was not illuminated.

I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the text from the provided URL.

Perhaps this can help...