Your fuel injection computer (DME) may output a code that indicates a faulty camshaft position sensor (CPS). This important sensor tells the car’s computer where the camshaft lobes are located in relation to the combustion cycle. The DME takes the signals from the cam position sensor and crankshaft position sensor, and calculates when to fire the fuel injectors and spark plugs. If the camshaft position sensor is not operating properly, your car will run very erratically or perhaps not at all.

We’ve put together a detailed step-by-step which you can complete within an hour’s time.

Check out the article here -> W210 E320 CPS DIY