DD15 SPN 132/FMI 1 Troubleshooting

SPN 132/FMI 1

This code typically means the air mass flow is too low.‪

Check as follows:‪

  1. Check for multiple codes.
    1. If any other fault codes are present, repair them first.
    2. If only 132/1 is present, go to the next step.
  2. Perform pressure check/visual inspection of the following and repair as necessary.
    • Plugged inlet air filters
    • Charge air cooler leaks
    • Leaking intake manifold
    • Exhaust leaks/plugging

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