Detroit DD15 GHG14 (2014-16) Fault Code: SPN 1324 FMI 31 (MCM) Idle Smoothness Control/Cylinder #2 Misfire at Idle
NOTE: Please see the step by step troubleshooting procedures for this specific code.
PROBABLE CAUSES:
1. Cylinder kit failure.
2. Valve train failure.
3. Lash adjustments.
4. Fuel injector.
5. High pressure fuel line (rail to fuel injector).
6. Debris entering fuel injector.
7. Fuel quality.
Note: If 1322-31 active, fix that first.
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