Toyota Yaris: P0720 → OSS Circuit → Malfunction
P0720 is a generic OBD II trouble code, which means that it has the same meaning for your Toyota Yaris as it would any other vehicle. It indicates that your Yaris’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