Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
CKP sensor is mounted in engine front cover and works in conjunction with the 4X reluctor wheel on front of crankshaft. CKP sensor has battery power supply, ground and signal circuit. As crankshaft rotates, reluctor wheel teeth interrupt a magnetic field produced by a magnet within the sensor. Signals produced by the sensor is monitored by the PCM to accurately measure crankshaft velocity to detect misfire. This sensor is not used for spark control or fueling. For this diagnostic test, PCM monitors CKP sensor signal and the Low/High resolution signals from the distributor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.