Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3227
FMI: 5
Description: Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Open
Troubleshooting:
DESCRIPTION:
This code sets when there is an open on the SCR outlet NOx circuit between the sensor and
the ECU.
MONITORED PARAMETER:
SCR Outlet NOx sensor
TYPICAL ENABLING CONDITIONS:
Dewpoint enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
3 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
10% derate
VERIFICATION:
Parked regen
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. SCR Outlet NOx sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3228
FMI: 2
Description: Selective Catalyst Reduction Outlet NOx Sensor Failure to Activate
Troubleshooting:
POSSIBLE CAUSES:
Faulty SCR outlet NOx sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3236
FMI: 9
Description: Exhaust Mass Signal Not Available Via Controller Rea Network
Troubleshooting:
POSSIBLE CAUSES:
Aftertreatment Control Module / Motor Control Module / Common Powertrain Controller needs
reprogramming.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3242
FMI: 3
Description: Diesel Oxidation Catalyst Inlet Temperature Sensor Circuit Failed High
Troubleshooting:
DESCRIPTION:
This monitor will detect DOC inlet short to power.
MONITORED PARAMETER:
Diesel Oxidation Catalyst (DOC) Inlet Temperature.
TYPICAL ENABLING CONDITIONS:
DOC inlet temperature sensor signal voltage greater than 1.46 volts.
MONITOR SEQUENCE:
Always enabled
TYPCIAL DURATION:
One minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate
VERIFICATION:
Ignition cycle
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty DOC inlet temperature sensor.
5. Faulty wiring.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3242
FMI: 4
Description: Diesel Oxidation Catalyst Inlet Temperature Sensor Failed Low
Troubleshooting:
DESCRIPTION:
This monitor will detect DOC inlet short to ground.
MONITORED PARAMETER:
Diesel Oxidation Catalyst (DOC) Inlet Temperature.
TYPICAL ENABLING CONDITIONS:
DOC inlet temperature sensor signal voltage greater than 0.39 volts.
MONITOR SEQUENCE:
Continuous when enabling conditions met.
TYPCIAL DURATION:
One minutes
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate
VERIFICATION:
Ignition cycle
POSSIBLE CAUSES:
1. Bent pins.
2. Pushed out pins.
3. Spread pins.
4. Corroded pins.
5. Faulty wiring.
6. Damaged harness.
7. Faulty DOC inlet temperature sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3242
FMI: 8
Description: Diesel Oxidation Catalyst Inlet Temperature – Signal Spike
Troubleshooting:
DESCRIPTION:
This monitor will detect DOC inlet short to ground.
MONITORED PARAMETER:
Diesel Oxidation Catalyst (DOC) Inlet Temperature.
TYPICAL ENABLING CONDITIONS:
DOC inlet temperature sensor signal voltage greater than 0.39 volts.
MONITOR SEQUENCE:
Continuous when enabling conditions voltage greater than 0.39 volts.
TYPCIAL DURATION:
One minute
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
Derate
VERIFICATION:
Ignition cycle
NOTE: This fault indicates the Aftertreatment Control Module (ACM) has detected a sudden
temperature shift on the Diesel Oxidation Catalyst (DOC) inlet temperature sensor. The most
likely cause is an intermittent wiring concern (poor terminal fit, corrosion, chaffing etc.).
POSSIBLE CAUSES:
1. Wire chaffing.
2. Wire corrosion.
3. Improper connections.
4. Physical damaged to wire.
5. Faulty DOC inlet temperature sensor.