DESCRIPTION:
Selective catalyst reduction (SCR) outlet NOx sensor signal not available.
MONITORED PARAMETER:
SCR outlet NOx sensor signal.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
MIL
VERIFICATION:
Engine Idle: One minute.
NOTE: If fault occurred during high idle regeneration, clear fault and release vehicle.
NOTE: If occurrence counter 5 or less, clear codes and return vehicle to customer.
PROBABLE CAUSES:
1. SCR outlet NOx sensor.
2. SCR outlet NOx sensor connector/harness.
3. ACM2 (engine computer) failure.
Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3226 FMI 4 (ACM) Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed Low
Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3226 FMI 3 (ACM) Selective Catalyst Reduction Outlet NOx Sensor Circuit Failed High
Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3226 FMI 2 (ACM) Selective Catalyst Reduction Outlet NOx Sensor – Drift
Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3216 FMI 21 (MCM) Selective Catalyst Reduction Inlet NOx Sensor – Drift (Low Box)
Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3216 FMI 13 (ACM) Selective Catalyst Reduction Inlet NOx Sensor Signal Not Available
Detroit DD16 EPA10 (2010-13) Fault Code: SPN 3216 FMI 4 (ACM) Selective Catalyst Reduction Inlet NOx Sensor Circuit Failed Low