Detroit DD15 GHG14 (2014-16) Fault Code: SPN 3251 FMI 20 (ACM) Diesel Oxidation Catalyst Inlet Pressure – Not Plausible

DESCRIPTION:
Diesel oxidation catalyst (DOC) inlet pressure sensor – not plausible.

MONITORED PARAMETER:
Exhaust pressure

TYPICAL ENABLING CONDITIONS:
Always on

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
Derate 25%

VERIFICATION:
Parked regen

PROBABLE CAUSES:
1. Inspect all connections upstream of the MCM – DPF outlet pressure sensor, ATD harness 10-pin connector, VIH 31-pin connetor, and MCM 120-pin connector.
2. DPF outlet pressure sensor.
3. DPF outlet pressure sensor tube.
4. Perform stationary regen.
5. Inspect DPF for oil, soot, or coolant contamination.

Related

Categories DD15 GHG14 (2014-16), Detroit, DTC TRUCKS Tags 16, 20, 2014, 3251, ACM, Catalyst, Code, DD15, Detroit, Diesel, Fault, FMI, GHG14, Inlet, Not, oxidation, Plausible, Pressure, SPN

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