Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5016
FMI: 3

Description: High Side Digital Output 4 Circuit Failed High
Troubleshooting:
DESCRIPTION:
High side digital output circuit shorted to power.
MONITORED PARAMETER:
High side digital output.
TYPICAL ENABLING CONDITIONS:
Always on
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERFICATION:
Key cycle
NOTE: The supply voltage circuit is networked internal of the Aftertreatment Control Module
(ACM). This circuit supplies voltage to the coolant valve, Diesel Exhaust Fluid (DEF) post run
indicator (if equipped), and the inlet NOx sensor. A short-to-power on any one of those circuits
will set this fault code.
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty Aftertreatment Control Module.
5. Faulty wiring.

6. Faulty connector.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5016
FMI: 4

Description: High Side Digital Output 4 Circuit Failed Low
Troubleshooting:
DESCRIPTION:
High side digital output circuit shorted low.
MONITORED PARAMETER:
High side digital output.
TYPICAL ENABLING CONDITIONS:
Always on
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERFICATION:
Key cycle
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty DEF Post Run indicator.
5. Faulty wiring.
6. Faulty Aftertreatment Control Module.
6. Faulty connector.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5017
FMI: 3

Description: NOx Sensor Digital Output 5 Circuit Signal Failed High
Troubleshooting:
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty DEF Post Run indicator.
5. Faulty wiring.
6. Faulty Aftertreatment Control Module.
7. Faulty SCR outlet NOx sensor.
Page

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5017
FMI: 4

Description: NOx Sensor Digital Output 5 Circuit Signal Failed Low
Troubleshooting:
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. SCR outlet NOx sensor.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5018
FMI: 18

Description: Diesel Oxidation Catalyst Efficiency Fault
Troubleshooting:
DESCRIPTION:
Diesel Oxidation Catalyst (DOC) efficiency fault.
MONITORED PARAMETER:
Exhaust temperature
TYPICAL ENABLING CONDITIONS:
Always on
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate 25%
VERFICATION:
Parked Regen
NOTICE: If a High Idle Regen is started, then aborted within the first 12 minutes, more than
two times without shutting down the engine, the Aftertreatment Control Module (ACM) could
falsely set SPN 5018/FMI 18; in this case the code can be ignored.
POSSIBLE CAUSES:
1. Leaky exhaust system.
2. faulty DOC temperature sensor.
3. Spread pins.
4. Corroded pins.
5. Faulty HC doser block.