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.
Camshaft Position Sensor (Except 3.0L, 3.4L & 4.2L)
The Camshaft Position (CMP) sensor utilizes a Hall Effect sensor that serves a similar function as Crankshaft Position (CKP) sensor. CMP sensor is mounted in distributor or on engine block in close proximity to camshaft. On 2.2L, primary function of CMP sensor is to correlate crankshaft to camshaft position so PCM can determine which cylinder is ready to be fueled by fuel injector. On all others, CMP sensor creates a 1X signal and is used by PCM to identify which cylinder(s) is misfiring. The 1X signal may not affect driveability.
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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.