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.
Code 36 - 24X Signal Error (3.1L CALIF. "W" Body): Notes
The 24X crankshaft position sensor is used to improve spark during cranking and engine speeds up to 2000 RPM. Code 36 will set if the engine is running and the ECM detects 6 or more 24X crankshaft sensor reference pulses have not occurred. Code 36 diagnosis occurs once per ignition cycle.
- The 24X signal RPM should be the same as engine speed up to 2000 RPM, at which time it stops. This test determines if the ECM is putting out a 24X signal.
- If circuit No. 1800 is shorted to voltage, this could also lead to a faulty sensor.
- If circuit No. 632 is shorted to voltage, this will set both Code 17 and Code 36.
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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.
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