Incredible Audi A4 Epc And Check Engine Light References. Here are some of the other most common codes: Web to fix the epc light on an audi a4, you should first check if there are any loose or damaged wires or connectors, and then disconnect the car battery for a few minutes to reset the epc system.
This rough idle could just be its “limp mode” but not sure. In most cases, the issue is relatively easy to diagnose and fix. Web can you drive with epc light on audi a4?
