How to Replace a Camshaft Position Sensor

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The camshaft position sensor (CMP) is used by the powertrain control module (PCM) to determine the position of the camshaft in relation to the crankshaft. The PCM uses this information for fuel injector control, and in some cases, ignition system control. There are two basic types of camshaft sensors: Hall effect and magnetic reluctance. The Hall effect design has three wires going to it: reference, signal and ground. The PCM sends a reference DC voltage to the camshaft sensor and the sensor sends a return signal back to the PCM in accordance with camshaft position. On the other hand, the magnetic reluctance sensor has two wires and creates its own AC voltage when it passes by a reluctor wheel inside the engine.

Part 1 of 3: Locating and removing the camshaft position sensor

Materials Needed

  • Free repair manuals - Autozone provides free online repair manuals for certain makes and models
  • Protective gloves
  • Repair manuals (optional)
  • Safety glasses
  • Wrench or ratchet and sockets of the appropriate size

Step 1: Locate the sensor. The camshaft position sensor is generally mounted in the block or cylinder head, depending on engine design.

Step 2: Disconnect the negative battery cable. Disconnect the negative battery cable and set it aside.

Step 3: Remove the sensor electrical connector. Remove the electrical connector by pushing down on the tab and sliding it off.

Step 4: Remove the sensor mounting screw(s). Remove the sensor mounting screws using a wrench or ratchet and socket of of the appropriate size.

Step 5: Remove the sensor. Remove the sensor from the engine by pulling it straight out.

Part 2 of 2: Installing the new camshaft position sensor

Step 1: Install the new sensor. Push the sensor straight in and align the bolt flange with the mounting hole.

Step 2: Install the sensor mounting screws. Install the sensor mounting screws and tighten them down using a wrench or ratchet and socket of of the appropriate size.

Step 3: Reinstall the electrical connector.

Step 4: Reinstall the negative battery cable. Reconnect the negative terminal to the battery.

That’s what it takes to replace your camshaft position sensor. If this seems like something you’d prefer to leave to a professional, YourMechanic offers expert camshaft position sensor replacement.


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Recent Camshaft Position Sensor Replacement reviews

Excellent Rating


YourMechanic Camshaft Position Sensor Replacement Service

Average Rating

4.8/5

Number of Reviews

659

Rating Summary
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Ben

40 years of experience
1145 reviews
Ben
40 years of experience
Pontiac G6 - Camshaft Position Sensor Replacement - Spring, Texas
Ben is knowledgeable and very courteous. He was able to complete the repairs and get the vehicle back on the road safely. I’d definitely request him for future repairs.
Mercedes-Benz E350 - Camshaft Position Sensor - Houston, Texas
Ben is an awesome mechanic but is also charismatic and a true patriot with over 20 years service in the Marine Corp. Absolutely the best experience one can expect. And the pricing and on-site service is truly a blessing...pricing beat my local mechanic by 30% and Mercedes by 75%.

Raymond

36 years of experience
157 reviews
Raymond
36 years of experience
Chrysler PT Cruiser - Camshaft Position Sensor - Henderson, Nevada
Extremely pleased with Ray! Wasted no time and knew the problem. Replaced sensor, car running normal within the hour of his arrival. Ray is very knowledgeable and very pleasant person that can be trusted. I highly recommend Ray and will request him in the future. I consider the rates very reasonable. I'm glad I decided to contact Your Mechanic.
Dodge Stratus - Camshaft Position Sensor - Las Vegas, Nevada
Raymond was on time and answered all my questions. He also took the time to show me what other things need to be done on my car!

MICHAEL

32 years of experience
146 reviews
MICHAEL
32 years of experience
Dodge Durango - Camshaft Position Sensor - Richboro, Pennsylvania
Michael has been very thorough in fixing my problem with my car. He has a pleasant personality and took the time to satisfactorily answer any questions I’ve had. He’s definitely an asset!
Dodge Journey - Camshaft Position Sensor - Horsham, Pennsylvania
Terrific guy...Car up and running...came out late in awful weather and fixed me up...Also gave some advice on existing and future issues that may arise...Will definitely recomend to anyone who needs service TY!

Anderson

26 years of experience
18 reviews
Anderson
26 years of experience
Mercedes-Benz E350 - Camshaft Position Sensor - Hollis, New York
Mr Anderson is a professional of the highest caliber. He is knowledgeable and easily referred to as an authority on anything of an auto mechanical nature.

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