Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4334
FMI: 4
Description: Diesel Exhaust Fluid Pressure Sensor Circuit Failed Low
Troubleshooting:
DESCRIPTION:
Diesel Exhaust Fluid (DEF) pressure sensor circuit voltage below normal, or shorted to low
source.
MONITORED PARAMETER:
Diesel Exhaust Fluid (DEF) pressure sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERIFICATION:
Engine idle (1 minute).
POSSIBLE CAUSES:
1. Damaged pins.
2. Bent pins.
3. Spread pins.
4. Broken pins.
5. Pushed out pins
6. Corroded pins.
7. Damaged wire.
8. Faulty DEF doser unit.
9. Faulty ACM.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4353
FMI: 3
Description: Diesel Exhaust Fluid (DEF) Doser Valve Diffuser Heater Circuit Failed High
Troubleshooting:
DESCRIPTION:
This code sets when the Aftertreatment Control Module (ACM) detects a short to power on the
diffuser heater circuit.
MONITORED PARAMETER:
5V internal power supply.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty DEF doser valve.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4353
FMI: 4
Description: Diffuser Heater Circuit Failed Low
Troubleshooting:
DESCRIPTION:
This code sets when the Aftertreatment Control Module (ACM) detects a short to ground on the
diffuser heater circuit.
MONITORED PARAMETER:
5V internal power supply.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty DEF doser valve.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4353
FMI: 5
Description: Diffuser Heater Open Circuit
Troubleshooting:
DESCRIPTION:
This code sets when the Aftertreatment Control Module (ACM) detects an open in the diffuser
heater circuit.
MONITORED PARAMETER:
5V internal power supply.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine idle (one minute).
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty DEF doser valve.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4354
FMI: 3
Description: Line Heater #1 Circuit Failed High
Troubleshooting:
POSSIBLE CAUSES:
1. Bent pins
2. Spread pins
3. Corroded pins
4. Damaged connector
5. Faulty wiring
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