Detroit DD13 EPA07 (2007-09) Fault Code: SPN 636 FMI 31 (MCM) Crankshaft Position Sensor - Error Detected

DESCRIPTION:
Crankshaft position sensor failure.

MONITORED PARAMETER:
Crankshaft position sensor.

TYPICAL ENABLING CONDITIONS:
Engine idle

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
2 seconds

DASH LAMPS:
MIL

VERIFICATION:
Engine idle

NOTE: If code 723-3, 723-4, 636-3, or 636-4 active fix those first.

PROBABLE CAUSES:
1. Verify proper camshaft timing and gear lash adjustment.
2. Camshaft position sensor failure.
3. Camshaft position sensor harness/connector.

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