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Detroit DD15 GHG14 (2014-16) Fault Code: SPN 677 FMI 31 (MCM, CPC) Starter Jammed (Tooth to Tooth Jam)

NOTE: This fault code indicates the starter teeth have not engaged correctly into the flywheel (jammed).

NOTE: Attempt to start the engine. If the engine starts correctly, attempt to start the engine three times. If the fault does not re-occur, clear code and release vehicle. The starter may not engage the flywheel.

POSSIBLE CAUSES:
1. Starter motor alignment.
2. Starter drive damage.
3. Incorrect starter installed.
4. Flywheel damage.

PROBABLE CAUSES:
1. Starter motor alignment.
2. Starter drive damage.
3. Incorrect starter installed.
4. Flywheel damage.

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