Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4374
FMI: 1
Description: Over Pressurized DEF System
Troubleshooting:
DESCRIPTION:
Over pressurized Diesel Exhaust Fluid (DEF) system.
MONITORED PARAMETER:
DEF pump speed vs. DEF pressure.
TYPICAL ENABLING CONDITIONS:
DEF Pump enabled OR On-Off-Cycle request.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
ADS self-check
POSSIBLE CAUSES:
1. Damaged pins.
2. Bent pins.
3. Spread pins.
4. Corroded pins.
5. Unseated pins.
6. Faulty DEF return line.
7. Faulty DEF dosing unit.
Page
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4374
FMI: 3
Description: Diesel Exhaust Fluid (DEF) Pump Speed Signal Above Measurement Range
Troubleshooting:
DESCRIPTION:
DEF pump speed signal above measurement range.
MONITORED PARAMETER:
DEF pump speed frequency.
TYPICAL ENABLING CONDITIONS:
DEF Pump enabled OR On-Off-Cycle request.
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 10%
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.
7. Faulty ACM.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4374
FMI: 4
Description: Diesel Exhaust Fluid (DEF) Pump Speed Signal Below Measurement Range
Troubleshooting:
DESCRIPTION:
DEF pump speed signal below measurement range.
MONITORED PARAMETER:
DEF pump speed vs. DEF pressure.
TYPICAL ENABLING CONDITIONS:
DEF Pump enabled OR On-Off-Cycle request.
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 10%
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.
7. Faulty ACM.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4374
FMI: 11
Description: DEF PNV SRH Loop Error (Pump Speed Low)
Troubleshooting:
DESCRIPTION:
This code sets when the Diesel Exhaust Fluid (DEF) pump speed is lower than normal for a
given DEF pressure.
MONITORED PARAMETER:
DEF pump speed vs. DEF pressure.
TYPICAL ENABLING CONDITIONS:
DEF pump enabled OR On-Off-cycle request.
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
ADS self-check.
POSSIBLE CAUSES:
1. Damaged pins.
2. Bent pins.
3. Spread pins.
4. Corroded pins.
5. Unseated pins.
6. Damaged connector.
7. Damaged wire.
8. Faulty DEF return line.
9. Faulty DEF dosing unit.