Make: Detroit
Engine: DD8 GHG17 (2017 & Newer)
PID: N/A
SPN: 3216
FMI: 14
Description: NOx Raw Sensor Does Not Support Self-Diagnosis
Troubleshooting:
DESCRIPTION:
This fault code sets when the Aftertreatment Control Module (ACM) determines that the NOx
Sensor cannot perform the Self-Diagnosis Test.
MONITORED PARAMETER:
NOx Sensor
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two Seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
1. Turn the Ignition ON, clear the fault code.
2. let the engine idle for 10 minutes, cycle the ignition OFF for 10 minutes.
3. Turn the ignition back ON and recheck for the fault code.
POSSIBLE CAUSES:
1. NOx Sensor software version older than TR011
2. Faulty NOx Sensor
Make: Detroit
Engine: DD8 GHG17 (2017 & Newer)
PID: N/A
SPN: 3216
FMI: 16
Description: Engine Out NOx Sensor Drifted Low
Troubleshooting:
DESCRIPTION:
NOx Sensor plausibility check
MONITORED PARAMETER:
Aftertreatment Inlet NOx Sensor
TYPICAL ENABLING CONDITIONS:
General Enabling Conditions:
Engine is NOT in Regeneration and operating at high speed and loads
Specific Enabling Conditions:
Engine Parameter –
1. Engine Speed (rpm) – 1350 (Min), 1600 (Max)
2. Torque (N·m) – 1100 (Min), 1500 (Max)
3. Battery Voltage (Volts) – Minimum of 11.08
4. Engine Coolant Outlet Temperature – Minimum of 70°C (158°F)
5. Ambient Temperature – Minimum of -8°C (17.6°F)
6. Barometric Pressure (mbar) – Minimum of 755 mbar (11 psi)
7. Time Since DPF Regen – Minimum of 15
8. Beginning of Injection (BOI) – Degrees of Crankshaft Rotation – Minimum of 10
9. EGR Mass (kg/min) – Minimum of 5
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Continuous when enabling conditions met
TYPICAL DURATION:
150 seconds (two-cycle)
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Parked SCR Efficiency Test
POSSIBLE CAUSES:
If multiple faults are present, troubleshoot these faults first.
1. Faulty Selective Catalytic Reduction Inlet NOx Sensor
2. Leaking or damaged Charge Air Cooler
3. External leakage (e.g. soot, Coolant deposits at joints) on Exhaust Gas Recirculation (EGR)
and Exhaust System (Turbine housing, Exhaust Manifold, etc.)
4. Damaged, bent, spread, corroded or unseated (pushed out) pins, signs of moisture in the
connector or wire damage near the connector on Intake Pressure/Temperature Sensor and/or
wiring connector
5. Faulty Intake Pressure/Temperature Sensor
6. Excessive buildup or blockage on EGR Cooler Hot Pipe, EGR Crossover Pipe and/or
Delivery Pipe
7. Faulty EGR Cooler
8. Damaged EGR Valve
9. Damaged, bent, spread, corroded, or unseated (pushed out) pins and signs of moisture in
the connector or wire damage near the connector on Inlet NOx Sensor and/or wiring connector
10. Faulty SCR Inlet NOx Sensor
Make: Detroit
Engine: DD8 GHG17 (2017 & Newer)
PID: N/A
SPN: 3216
FMI: 20
Description: NOx Raw Sensor Diagnosis Oxygen Pump Capacity High
Troubleshooting:
DESCRIPTION:
Rationality check of Engine out NOx Sensor reading. Intrusive test was 150% higher than
expected learn value.
MONITORED PARAMETER:
Inlet NOx Sensor reading
TYPICAL ENABLING CONDITIONS:
Key ON, Engine OFF
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Five seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Ignition Cycle (Key ON, Engine OFF)
POSSIBLE CAUSES:
If multiple faults are present, troubleshoot these faults first.
1. Damaged, bent, spread, corroded, or unseated (pushed out) pins, signs of moisture in the
connector or wire damage near the connector on NOx Sensor and harness connector
2. Faulty SCR Outlet NOx Sensor