The camshaft position sensor, like the rest of the car's important components, is critical. It enables the car's engine to determine the location of the crankshaft drive. The component collects and communicates data on the vehicle's camshaft speed to the engine control module (ECM). Meanwhile, the ECM uses the information from the cam sensor to determine the engine's ignition and fuel injection timing. Although oil on the camshaft position sensor is not uncommon, it must not reach a particular amount; otherwise, a problem might arise, harming the car's engine. Further down, the reason of oil on a car's camshaft position sensor is revealed. It is suggested that you repair this issue before your vehicle's MOT testing service is due. The reason for this is that it may cause your car's emissions test to fail, so check MOT status and schedule an appointment with your local mechanic ahead of time. Oil on the Camshaft Position Sensor: What Causes It...