Series 60 DDEC VI Troubleshooting – Section 31.1 SPN 132/Fmi1

Section 31.1
SPN 132/Fmi1

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

Section 31.1.1
Low Air Mass Flow Check

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