Audi A4: P0720 → OSS Circuit → Malfunction
P0720 is a generic OBD II trouble code, which means that it has the same meaning for your Audi A4 as it would any other vehicle. It indicates that your A4’s OSS (Output Shaft Speed Sensor) is reporting a malfunction. It’s typically caused by a bad OSS, or a wiring problem. The OSS works by … Read more