Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4337 FMI 4 (ACM) Diesel Exhaust Fluid Temperature Sensor Circuit Failed Low
DESCRIPTION:
Diesel exhaust fluid (DEF) temperature sensor circuit failed low.
MONITORED PARAMETER:
DEF temperature sensor.
TYPICAL ENABLING CONDITIONS:
Always enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always enabled
TYPICAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
VERIFICATION:
Engine Idle: One minute.
PROBABLE CAUSES:
1. DEF metering unit temperature sensor.
2. DEF metering unit temperature sensor connector/harness.
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