FMI 16 — Data valid but above normal operating range — moderately severe level
Real reading, clearly high. Usually the middle warning stage before a derate.
Common causes
- Developing restriction, overheat or overpressure
- Control device not regulating down
- Sensor drift
What to test, in order
- Verify against a mechanical gauge or second sensor
- Inspect the flow path for restriction
- Test the control device's regulating range
- Watch for the value climbing into the most-severe threshold
Codes we document with FMI 16
SPN 102 FMI 16Boost pressure above normal - moderately severe · CATSPN 102 FMI 16Boost pressure above normal - moderately severe · DetroitSPN 102 FMI 16Boost pressure above normal - moderately severe · InternationalSPN 102 FMI 16Boost pressure above normal - moderately severe · PACCARSPN 102 FMI 16Boost pressure above normal - moderately severe · MERCEDESSPN 102 FMI 16Boost pressure above normal - moderately severe · VolvoSPN 102 FMI 16Boost pressure above normal - moderately severe · MackSPN 102 FMI 16Boost pressure above normal - moderately severe · CumminsSPN 1127 FMI 16Turbo boost pressure high · VolvoSPN 1636 FMI 16Intake manifold temperature above warning · CATSPN 3251 FMI 16DPF restriction above normal · InternationalSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · CATSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · DetroitSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · PACCARSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · MERCEDESSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · VolvoSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · MackSPN 3251 FMI 16DPF differential pressure above normal - moderately severe · CumminsSPN 3719 FMI 16Soot load high (level 1) · PACCARSPN 3719 FMI 16DPF soot load high · VolvoSPN 3720 FMI 16DPF ash load high - moderately severe · CATSPN 3720 FMI 16DPF ash load high - moderately severe · DetroitSPN 3720 FMI 16DPF ash load high - moderately severe · InternationalSPN 3720 FMI 16DPF ash load high - moderately severe · PACCAR
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