Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4374
FMI: 14
Description: DEF PNV SRH Loop Error (Pump Speed High)
Troubleshooting:
DESCRIPTION:
This code sets when the Diesel Exhaust Fluid (DEF) pump speed is higher than normal for a
given DEF pressure.
MONITORED PARAMETER:
1. DEF pump speed. DEF pressure.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Continuous until resolved.
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
SCR ADS self-check.
POSSIBLE CAUSES:
1. Restriction in the DEF line between the DEF tank and the DEF pump.
2. Restriction in the DEF line between the DEF pump and the DEF dosing unit.
3. Air in the DEF line between the DEF tank and the DEF pump.
4. Restriction in the DEF pump.
5. Failed DEF pump.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4374
FMI: 19
Description: Diesel Exhaust Fluid System is Not Being Controlled as Expected
Troubleshooting:
DESCRIPTION:
This code sets when the Diesel Exhaust Fluid (DEF) pump speed is higher than normal for a
given DEF pressure.
MONITORED PARAMETER:
DEF pump speed, DEF pressure.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
SCR ADS self-check.
POSSIBLE CAUSES:
1. Damaged wiring.
2. Wire chafing.
3. Bent pins.
4. Spread pins.
5. Corroded pins.
6. Faulty DEF pump.
Page
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4375
FMI: 3
Description: Diesel Exhaust Fluid Pump Circuit Failed High
Troubleshooting:
DESCRIPTION:
Diesel Exhaust Fluid (DEF) pump circuit failed high.
MONITORED PARAMETER:
DEF pump
TYPICAL ENABLING CONDITIONS:
DEF pump on.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
SCR ADS self-check.
POSSIBLE CAUSES:
1. Bent pins
2. Spread pins
3. Corroded pins
4. Faulty wiring
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4375
FMI: 4
Description: Diesel Exhaust Fluid Pump Circuit Failed Low
Troubleshooting:
DESCRIPTION:
Diesel Exhaust Fluid (DEF) pump circuit failed low.
MONITORED PARAMETER:
DEF pump
TYPICAL ENABLING CONDITIONS:
Ignition on.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
SCR ADS self-check.
POSSIBLE CAUSES:
1. Bent pins
2. Spread pins
3. Corroded pins
4. Faulty wiring