Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4363
FMI: 2
Description: Selective Catalyst Reduction Outlet Temperature – Not Plausible
Troubleshooting:
DESCRIPTION:
This fault sets if the SCR outlet temperature is 70°C (126°F) higher compared to all other
aftertreatment temperature sensors after 8-hour cold soak.
MONITORED PARAMETER:
Selective Catalyst Reduction (SCR) outlet temperature vs. all other ATS temperature sensors.
TYPICAL ENABLING CONDITIONS:
Engine off more than 8 hours, battery voltage greater than 10.98 V, ignition on longer than 60
seconds.
MONITOR SEQUENCE:
Key ON, engine OFF for more than 60 seconds.
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Ignition off/ 8-hour cold soak.
POSSIBLE CAUSES:
1. Spread pins.
2. Damaged pins.
3. Corroded pins.
4. Fretting pins.
5. Faulty SCR outlet temperature sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4363
FMI: 3
Description: Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed High
Troubleshooting:
DESCRIPTION:
Selective Catalyst Reduction (SCR) Outlet Temperature sensor circuit failed high.
MONITORED PARAMETER:
SCR outlet temperature 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. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty SCR outlet temperature sensor.
5. Faulty wiring.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4363
FMI: 4
Description: Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed Low
Troubleshooting:
DESCRIPTION:
Selective Catalyst Reduction (SCR) outlet temperature sensor circuit failed low.
MONITORED PARAMETER:
SCR outlet temperature 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. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty SCR outlet temperature sensor
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 4363
FMI: 8
Description: SCR Outlet Temperature Signal Spike
Troubleshooting:
DESCRIPTION:
This fault code sets when the Aftertreatment Control Module (ACM) detects a momentary
abnormal Selective Catalyst Reduction (SCR) outlet temperature reading.
MONITORED PARAMETER:
Selective Catalyst Reduction outlet temperature sensor.
TYPICAL ENABLING CONDITIONS:
Non-regen mode.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
2 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
SCR efficiency test.
POSSIBLE CAUSES:
1. Spread pins.
2. Damaged pins.
3. Corroded pins.
4. Fretting pins.
5. Faulty SCR outlet temperature sensor.