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
Crankshaft position sensor is a pick-up coil located on front of engine, near crankshaft pulley and uses a 34-tooth signal plate located on the crankshaft. ECM uses input signals from crankshaft position sensor to determine crankshaft angle and engine speed. DTC is set when ECM does not receive input signal from crankshaft position sensor with engine cranking or with engine speed of 600 RPM or more. Possible causes are:
- Crankshaft position sensor circuit is open or shorted.
- Defective crankshaft position sensor.
- Defective signal plate.
- Defective ECM.
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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.