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: Notes
The 24X crankshaft position sensor is used to improve spark during low engine speeds. Code 36 will set if the engine is running and the PCM 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 PCM is putting out a 24X signal.
- Determines if signal voltage is present at the PCM.
- Determines is battery voltage is present at sensor input.
- Applying battery voltage to the 24X pigtail circuit determines pigtail and sensor integrity.
- Determines ground path continuity.
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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.