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