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 DD13 GHG14 (2014-16) Fault Code: SPN 3251 FMI 21 (ACM) Diesel Oxidation Catalyst Inlet/Outlet Pressure – Not Plausible
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3251 FMI 20 (ACM) Diesel Oxidation Catalyst Inlet Pressure – Not Plausible
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3251 FMI 16 (ACM) Diesel Particulate Filter Pressure Out of Range High
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3251 FMI 1 (ACM) Diesel Particulate Filter Pressure Out of Range Low
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3251 FMI 0 (ACM) Diesel Particulate Filter Pressure Out of Range Very High
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 3250 FMI 31 (ACM) Abnormal Diesel Oxidation Catalyst Temperature Rise