How Long Does a Crankshaft Position Sensor Last? | YourMechanic Advice

How Long Does a Crankshaft Position Sensor Last?

The crankshaft position sensor monitors the rotational speed and position of the crankshaft in the engine. It reports this information to the engine management system to control the ignition system timing. The crankshaft position sensor is used with the camshaft position sensor to monitor the valves and pistons in the engine, which are an important part of the engine’s variable valve timing. Furthermore, the crankshaft position sensor synchronizes the engine once it starts, letting the management system know when to send the fuel.

The crankshaft position sensor needs to be in great condition in order to give an accurate reading. Therefore, if something is off with the sensor, the engine may exhibit different problems. Since the crankshaft position sensor is used every time the vehicle is running, there may be damage to the wheel and pin, magnetic problems, and wiring problems that can occur throughout the vehicle’s lifetime.

Wheel and pin damage happens when any of the wheel’s teeth are broken, worn, or snapped off. When this happens, the pattern of pulses that the sensor measures will be off and the sensor will become confused. The magnet part of the crankshaft position sensor can attract metal shavings that are in the engine compartment. This can throw off the sensor’s measurements as well. In addition, they can bridge between the wheel and the sensor, meaning they become closer together which also provides the wrong measurement. Wiring problems can happen anytime electricity is involved, and that is true with the crankshaft position sensor as well. The circuitry that connects the sensor to the computer’s control module can burn out. The sensor may not be able to read a signal at all if this happens.

Since the crankshaft position sensor can wear or break over time, it will need to be replaced. Watch for the following signs that indicate this is becoming an issue:

  • Poor fuel economy due to the engine using more gas
  • Engine misfiring because of the combustion being disrupted
  • Acceleration problems because the vehicle’s computer cannot make the proper adjustments
  • Check Engine Light
  • Difficult starting because the engine is not getting the proper amount of fuel
  • Stalling at low speeds because the fuel injectors are not providing enough fuel

If you are experiencing any of the symptoms above, have a mechanic take a look at your car. They make is simple to have your crankshaft position sensor replaced because their mobile mechanics will come to your home or office to fix your car.

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21 years of experience
1895 reviews
21 years of experience
Mercedes-Benz S550 - Crankshaft Position Sensor - Winchester, California
Chris is extremely informative goes well above and beyond to make sure everything is done to the highest level per Mercedes- Benz I am so happy that I am dealing with Chris and your company referrals will follow!
Nissan 350Z - Crankshaft Position Sensor Replacement - Laguna Niguel, California
Chris is very knowledgeable. He did a great job getting my car repaired and made sure everything was working before leaving. Will definitely use Chris again.


11 years of experience
101 reviews
11 years of experience
Buick LeSabre - Crankshaft Position Sensor - Hamburg, Pennsylvania
Shawn was very knowledgeable, , professional, and efficient. I would recommend him to my family and friends!
Saab 9-5 - Crankshaft Position Sensor - Spring City, Pennsylvania
Shawn Is amazing, he is not only on time (this is the 4th service i have done with Shawn) but he is polite and very professional. I will recommend Shawn to all of my friends and family. If you get the chance to book Shawn dont hesitate one bit. he is the only mechanic i let touch my saab or my wife Hyundai period.


14 years of experience
268 reviews
14 years of experience
Toyota Camry - Crankshaft Position Sensor - Brooklyn, New York
This guy knows his work. Although he was late for the appointment, he arrived and was prepared. He made sure to tighten all bolts. My car was shaking before but after securely tightening all bolts, the car began running smoothly.
Volkswagen Passat - Crankshaft Position Sensor - Ridgewood, New York
My vw passat b6 had surged and rpm issues for a couple weeks and finaly died left me on the street and unable to start. Jason replaced my camshaft and crankshaft sensor and was able to get me back to the road in no time for the price that i would pay only the tow truck to go to shop. He has his all garage fully equipped in his car . After replacing parts and starting my car. He did 50 point check ,test drive the car making sure everything running good and gave me some awesome advices. Very proffesinal, frendly and knowledgeable.. I Highly recomeding Jason for any kind of car issue that you want to be solved while you watching tv in comfort of your home!


29 years of experience
687 reviews
29 years of experience
Dodge Journey - Crankshaft Position Sensor - Port Orange, Florida
James, was very polite pleasant and caring, I would recommend him to anyone and I will also request him to come back thanks James

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