Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 520329
FMI: 31
Description: DEF Flow Quantity Below Normal
Troubleshooting:
DESCRIPTION:
Diesel Exhaust Fluid (DEF) pump speed low.
MONITORED PARAMETER:
DEF pump speed.
TYPICAL ENABLING CONDITIONS:
DEF pump enabled and cannot operate above a DEF pump speed threshold.
MONITOR SEQUENCE:
DEF pump is enabled.
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERFICATION:
Selective Catalyst Reduction Airless Dosing System (SCR ADS) self-check.
POSSIBLE CAUSES:
Faulty DEF pump.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5747
FMI: 12
Description: Soot Sensor Heater Fault
Troubleshooting:
DESCRIPTION:
Soot Sensor heater temperature or voltage is out of range.
MONITORED PARAMETER:
Soot sensor heater temperature or voltage.
TYPICAL ENABLING CONDITIONS:
Soot sensor heater enabled.
MONITOR SEQUENCE:
Continuously
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
5 Seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERFICATION:
Verify repairs by using diagnostic tool Soot Sensor Panel inspection routine.
NOTE: When the engine starts, the soot sensor will cycle through three modes: 1. Protective
heating of exhaust temperature dew point 210°C (410°F) to allow moisture to evaporate.
2. Heater active regeneration 800°C (1472°F) to clean
soot.
3. Measurement mode for duration of key cycle.
POSSIBLE CAUSES:
1. Damaged pins.
2. Bent pins.
3. Spread pins.
4. Corroded pins.
5. Unseated pins.
6. Wire damage.
7. Faulty soot sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5435
FMI: 11
Description: DEF Pump Blocked Loop Error
Troubleshooting:
DESCRIPTION:
This code sets when the Aftertreatment Control Module (ACM) detects that the Diesel Exhaust
Fluid (DEF) pump speed is too low when activated.
MONITORED PARAMETER:
DEF pump speed.
TYPICAL ENABLING CONDITIONS:
DEF pump enabled and cannot operate above a DEF pump speed threshold.
MONITOR SEQUENCE:
DEF pump is enabled.
EXECUTION FREQUENCEY:
Service tool and infrequent in-use checks during on DEF dosing conditions.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate
VERFICATION:
Use the diagnostic tool to perform the Selective Catalyst Reduction Airless Dosing System
(SCR ADS) self-check.
POSSIBLE CAUSES:
Faulty DEF pump.
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