Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 520355
FMI: 21
Description: NOx Outlet Sensor Diagnosis Oxygen Pump Capacity Low
Troubleshooting:
DESCRIPTION:
NOx sensor internal reading less than 50.
MONITORED PARAMETER:
Outlet NOx sensor O2 reading.
TYPICAL ENABLING CONDITIONS:
Key ON, engine OFF.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
Five seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERFICATION:
Ignition cycle (key ON, engine OFF).
POSSIBLE CAUSES:
1. ACM needs updating.
2. Damaged pins.
3. Bent pins.
4. Spread pins.
5. Corroded pins.
6. Unseated pins.
7. Damaged connector.
8. Damaged wire.
9. Faulty outlet NOx sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 520349
FMI: 14
Description: DPF Filtration Efficiency Low
Troubleshooting:
DESCRIPTION:
Soot sensor detects elevated soot accumulation.
MONITORED PARAMETER:
Soot sensor current measurement.
TYPICAL ENABLING CONDITIONS:
Soot sensor enabled.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled
TYPCIAL DURATION:
5 seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERFICATION:
Verify repairs using diagnostic tool soot sensor panel inspection routine.
NOTE: When the engine starts, soot sensor will cycle through three modes: protective heating
of exhaust temperature dew point 210°C (410°F) to allow moisture to evaporate, heater active
regeneration 800°C (1472°F) to clean soot, and measurement mode for duration of key cycle.
POSSIBLE CAUSES:
1. Excessive soot build-up.
2. Faulty soot sensor.
3. Reset the ash accumulation.
4. Contaminated DPF substrate.
5. Faulty DPF.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 520348
FMI: 14
Description: Soot Sensor Tube Clogged / Defect
Troubleshooting:
DESCRIPTION:
Soot sensor blockage or tampering.
MONITORED PARAMETER:
Soot sensor protection tube temperature.
TYPICAL ENABLING CONDITIONS:
Always on
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
5 seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERFICATION:
Verify repairs by road test with loaded trailer for 30 minutes.
NOTE: When the engine starts, Soot Sensor will cycle through three modes: protective heating
of exhaust temperature dew point 210°C (410°F) to allow moisture to evaporate, heater active
regeneration 800°C (1472°F) to clean soot, and measurement mode for duration of key cycle.
POSSIBLE CAUSES:
1. Tampered soot sensor.
2. Damaged soot sensor.
3. Proper mounted soot sensor.
4. Loose soot sensor.
5. Faulty soot sensor.
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 5443
FMI: 16
Description: DPF HC Absorption High
Troubleshooting:
DESCRIPTION:
High hydrocarbon absorption in the Diesel Particulate Filter (DPF).
MONITORED PARAMETER:
Diesel Oxidation Catalyst (DOC) temperature in.
TYPICAL ENABLING CONDITIONS:
High idle times.
MONITOR SEQUENCE:
Always enabled
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERFICATION:
Parked regeneration
POSSIBLE CAUSES:
1. Excessive engine idle time.
2. Low engine temperature.
3. Low engine load.
4. Outdated ACM software.
5. Parked regeneration needed.