The camshaft position sensor, as a magnetic sensor, in your BMW is designed to read information about the camshaft and engine. The location of the camshaft position sensor is on the camshaft housing. Specifically, the function of the camshaft position sensor is to adjust properly and maintain the correct timing of a fuel-injected engine. A high-performance camshaft position sensor makes sure that your engine works efficiently. Here are some symptoms indicating your camshaft position sensor is failing: if the transmission is locked in a single gear until you turn off and restart the engine; if you feel the car jerking while losing power; if you notice a significant loss of engine power; if you experience irregular acceleration, misfiring, hard starting and surging; if you suffer that the engine doesn't start at all, you are supposed to check your camshaft position sensor immediately and see if the replacement is necessary. Welcome to shop BMW genuine OEM camshaft position sensor here with a discounted price.