Detroit DD16 EPA10 (2010-13) Fault Code: SPN 4337 FMI 2 (ACM) Diesel Exhaust Fluid Metering Unit Temperature – Drift

DESCRIPTION:
Diesel exhaust fluid (DEF) metering unit temperature – drift.

MONITORED PARAMETER:
DEF metering unit temperature.

TYPICAL ENABLING CONDITIONS:
DEF metering unit on, DEF tank refill not detected.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Five seconds

DASH LAMPS:
MIL

VERIFICATION:
Parked regeneration

PROBABLE CAUSES:
1. DEF metering unit temperature sensor.
2. DEF metering unit temperature sensor connector/harness.