Wait about 10 seconds. Fully depress the accelerator pedal and keep it for more than 10 seconds. Fully release the accelerator pedal (The CEL light will continue to blink). Turn ignition switch to On position and now you can start the car. The CEL light should be gone. 1. Fix and Wait. The best way to clear the check engine light is to pull the trouble code, identify and fix the issue and then drive your A4 around until the module that threw the code recognizes that the problem is fixed. Sometimes it can take a few drive cycles for your car's check engine light to shut down. Dear Audi Experts, I have a 99 Audi Avant A4 1.8T Quattro with 200k miles on it. I am losing compression big time when I drive, the check engine light is on and I have OBD II codes P0422, P1136, P0300 … read more Check engine light came back on same code as the 1st one HELP PLEASE. Reply. Sean says: May 23, 2022 at 9:38 am. Could be a bad cam sensor, ground, or wiring leading to the cam sensor. Sean, I've seen a lot of Audi comments on this thread, well here's one more. Audi q5 2011. For a while the oil sensor was off, then the epc light went There should be a check engine light code associated with the limp mode condition. Do you know what that code is? There may even be more than one. Hi, I have a 2006 Audi A4 Tdi 2l automatic. It recently activated the limp mode, NO warning lights on dash. Checked all fluids, tip top. It hasn't activated again, but still worried why it did Your Audi's check-engine light serves as a warning system to the driver that something isn't quite right with its functionality - whether mild or severe. When the check-engine light illuminates it simultaneously emits a code that indicates the specific part or area of the vehicle encountering a malfunction. As we mentioned, these issues cgEFG.

audi a4 check engine light codes