Detroit DD15 EPA07 (2007-09) Fault Code: SPN 132 FMI 1 (MCM) Air Mass Flow Too Low
NOTE: Please see the step by step troubleshooting procedures for this specific code.
NOTE: If any other codes are present, repair them first.
Otherwise, check the following for restrictions/failures:
1. Plugged inlet air filters.
2. Charge air cooler leaks.
3. Intake manifold leaks.
4. Exhaust system leaks.
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