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Camshaft position (CMP) sensor replacement

What is camshaft position sensor and how it works?

Camshaft position sensor monitors the position of the camshaft and transmits this data to the engines ECU. The on board computer system of the vehicle (ECU) works with several sensors and other devices to keep the engine running. Using data from the camshaft position sensor, the fuel injectors works and inject fuel when needed.

If camshaft sensor fails, the computer does not know when to trigger the injectors and may not trigger them at all, faulty or wrong readings from the sensor can also disrupt the timing of ignition, which will affect the fuel economy of the car. This sensor is used in conjunction with the crankshaft position sensor to control the ignition timing.

What are the symptoms of faulty camshaft position sensor?

What are the recommendations of replacing camshaft sensor?

There is no such replacement interval recommendation for camshaft sensor, when the sensor fails, engine may have trouble starting, staying running, idling, or working properly. The Check Engine Warning Light also come on. If you face any of the above symptoms in your car or your car check engine light comes on, simply find a mechanic get your car diagnosed for the problem.

When replacing the camshaft position sensor, the alignment of the timing belt should be monitored so that no liquid enters the position sensor mounting area. Some camshaft position sensors will need to update their software once installed. Timing belt, mass air flow sensors, and crankshaft position sensors can trigger the camshaft position sensor error code.

Can I drive with a faulty camshaft sensor?

The camshaft position sensor provides valuable information about the position of the camshaft to the computer management system. The computer system uses information from the position sensor to determine when to inject more fuel. Without the information from the sensor, the computer will not inject fuel properly and your vehicle will stall. Damage to the camshaft position sensor is usually caused by oil leaks; If so, you may need to replace or repair another part in your car.


What is a cost of replacing a camshaft sensor?

The cost of replacing camshaft sensor depends on the car you driving and the work shop you book repair with. Select your car make and model at the top of the page to find out the exact cost of replacing camshaft sensor on your vehicle, you can also book a local mobile mechanic once you find out the repair cost.

Following are the statistics of Camshaft position (CMP) sensor replacement on common vehicles in the united kingdom.

Make Model Cost
Honda Civic £ 158.49