Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3246
FMI: 4
Description: Diesel Particulate Filter Outlet Temperature Sensor Circuit Failed Low
Troubleshooting:
POSSIBLE CAUSES:
1. Bent pins.
2. Spread pins.
3. Corroded pins.
4. Faulty wiring.
5. Faulty DPF outlet temperature sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3246
FMI: 8
Description: Diesel Particulate Filter Outlet Temperature – Signal Spike
Troubleshooting:
NOTE: This fault indicates the aftertreatment control module (ACM) has detected a sudden
temperature shift on the diesel particulate filter (DPF) outlet temperature sensor. The most
likely cause is an intermittent wiring concern (Poor terminal fit, corrosion, chaffing etc.).
POSSIBLE CAUSES:
1. Faulty DPF outlet temperature sensor.
2. Faulty harness connector terminals between the DPF outlet temperature sensor and the
ACM including the chassis extension harness and ATD sensor box.
Page
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3246
FMI: 15
Description: Diesel Particulate Filter Outlet Temperature – High
Troubleshooting:
DESCRIPTION:
This code sets when the diesel particulate filter (DPF) outlet temperature is greater than 730°C
(1346°F) for more than two seconds.
MONITORED PARAMETER:
DPF Outlet Temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always on
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions are met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. CEL
2. MIL
ENGINE REACTION:
25% derate
VERIFICATION:
Parked regeneration
POSSIBLE CAUSES:
1. Faulty DPF outlet temperature sensor.
2. Fluid intrusion into the exhaust biased input for fuel mapping.
3. Incorrect or over-contributing fuel injectors.
4. Restricted air filter.
5. Incorrect camshaft timing.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3246
FMI: 20
Description: Diesel Particulate Filter Outlet Temperature Sensor Stuck
Troubleshooting:
POSSIBLE CAUSES:
1. DOC outlet temperature and DPF outlet temperature out of range.
2. Damaged pins.
3. Bent pins.
4. Spread pins.
5. Broken pins.
6. Unseated pins.
7. Corroded pins.
8. Damaged wire.
9. Faulty DOC outlet temperature sensor.
10. Faulty DPF outlet temperature sensor.
Page
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3246
FMI: 21
Description: Diesel Particulate Filter Outlet Temperature Sensor – Not Plausible
Troubleshooting:
POSSIBLE CAUSES:
1. DOC outlet temperature and DPF outlet temperature out of range.
2. Bent pins.
3. Spread pins.
4. Corroded pins.
5. Damaged wire.
6. Faulty DOC outlet temperature sensor.
7. Faulty DPF outlet temperature sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3250
FMI: 0
Description: Diesel Oxidation Catalyst Outlet Temperature Very High
Troubleshooting:
DESCRIPTION:
This code sets when the diesel oxidation catalyst (DOC) outlet temperature is greater than
760°C (1400°F) for more than two seconds.
MONITORED PARAMETER:
Diesel Oxidation Catalyst Temperature sensor.
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:
25% derate
VERIFICATION:
Parked regeneration
POSSIBLE CAUSES:
1. Faulty DOC outlet temperature sensor.
2. Fluid intrusion into the exhaust.
3. Biased input for fuel mapping.
4. Incorrect or over-contributing fuel injectors.
5. Restricted air filter.
6. Incorrect cam timing.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 3250
FMI: 2
Description: DOC Outlet Temperature Not Plausible
Troubleshooting:
DESCRIPTION:
This fault sets if the DOC outlet temperature is 70°C (126°F) higher compared to all other
aftertreatment temperature sensors after 8 hours cold soak.
MONITORED PARAMETER:
Diesel Oxidation Catalyst (DOC) Outlet Temperature versus all other ATS temperature sensors.
TYPICAL ENABLING CONDITIONS:
1. Engine off for more than 8 hours.
2. Battery voltage greater than 10.98 V.
3. Ignition on longer than 60 seconds.
MONITOR SEQUENCE:
1. Key on.
2. 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 hours cold soak.
POSSIBLE CAUSES:
1. Spread pins.
2. Damaged pins.
3. Corroded pins.
4. Pins with signs of fretting.
5. Faulty DOC outlet temperature sensor.