Detroit Diesel
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3251 FMI 20 (ACM) Diesel Oxidation Catalyst Inlet Pressure – Not Plausible
Posted by PerDiezel Solutions on
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. MIL2. 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.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3251 FMI 21 (ACM) Diesel Oxidation Catalyst Inlet/Outlet Pressure – Not Plausible
Posted by PerDiezel Solutions on
DESCRIPTION:Diesel oxidation catalyst (DOC) inlet /outlet pressure 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:MIL ENGINE REACTION:None VERIFICATION:Parked regeneration PROBABLE CAUSES:1. DOC inlet pressure sensor.2. DPF outlet pressure sensor.3. Check all electrical connections upstream of the ECM.4. DOC pressure sensor tube plugged.5. DOC pressure sensor elbow plugged.6. Perform stationary regen.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3361 FMI 3 (ACM) Diesel Exhaust Fluid Dosing Valve Circuit Failed High
Posted by PerDiezel Solutions on
DESCRIPTION:Diesel exhaust fluid (DEF) system circuit voltage above normal, or shorted to high source. MONITORED PARAMETER:DEF dosing unit voltage. TYPICAL ENABLING CONDITIONS:DEF dosing enabled. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:Two seconds DASH LAMPS:None ENGINE REACTION:Derate 25% VERIFICATION:Key off five minutes after repair. PROBABLE CAUSES:1. DEF doser valve harness connector.2. DEF metering unit failure.3. Wiring between DEF doser valve harness and the ECM.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3361 FMI 31 (ACM) Diesel Exhaust Fluid Dosing Unit Error
Posted by PerDiezel Solutions on
DESCRIPTION:The fault indicates that the diesel exhaust fluid (DEF) dosing unit was switch off before completing a cycle. MONITORED PARAMETER:DEF pressure TYPICAL ENABLING CONDITIONS:When service routine is enabled and during infrequent in-use check under non DEF dosing conditions. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Service tool and infrequent in-use checks during DEF dosing conditions. TYPICAL DURATION:Two seconds DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Selective catalyst reduction (SCR) airless dosing system (ADS) self-check routine. NOTE: If any other codes present, repair those first. PROBABLE CAUSES:1. DEF dosing unit harness connector/wiring.2. Dosing unit failure.
Detroit DD16 GHG14 (2014-16) Fault Code: SPN 3361 FMI 4 (ACM) Diesel Exhaust Fluid System Circuit Failed Low
Posted by PerDiezel Solutions on
DESCRIPTION:Diesel Exhaust Fluid (DEF) system circuit low voltage signal or short to ground. MONITORED PARAMETER:DEF dosing unit voltage. TYPICAL ENABLING CONDITIONS:DEF dosing enabled then disabled. MONITOR SEQUENCE:None EXECUTION FREQUENCY:Continuous when enabling conditions met. TYPICAL DURATION:50 seconds (max). DASH LAMPS:1. MIL2. CEL ENGINE REACTION:Derate 25% VERIFICATION:Key cycle off five minutes after repair. PROBABLE CAUSES:1. DEF doser valve harness connector.2. DEF metering unit failure.3. Wiring between DEF doser valve harness and the ECM.
