DESCRIPTION:Diffuser heater open circuit.
MONITORED PARAMETER:Diffuser Heater
TYPICAL ENABLING CONDITIONS:Always Enabled
MONITOR SEQUENCE:None
EXECUTION FREQUENCY:Always Enabled
TYPICAL DURATION:Two seconds
DASH LAMPS:1. MIL2. CEL
ENGINE REACTION:Derate 10%
VERIFICATION:Engine Idle (1 minute).
NOTE: If code not active, release vehicle to customer.
PROBABLE CAUSES:1. DEF metering unit diffuser heater.2. DEF metering unit diffuser heater connector/harness.3. DEF doser valve.
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4353 FMI 4 (ACM) Diffuser Heater Circuit Failed Low
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4353 FMI 3 (ACM) Diesel Exhaust Fluid Metering Unit Diffuser Heater Circuit Failed High
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4337 FMI 4 (ACM) Diesel Exhaust Fluid Temperature Sensor Circuit Failed Low
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4337 FMI 3 (ACM) Diesel Exhaust Fluid Metering Unit Temperature – Drift
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4337 FMI 2 (ACM) Diesel Exhaust Fluid Metering Unit Temperature – Drift
Detroit DD13 EPA10 (2010-13) Fault Code: SPN 4336 FMI 5 (ACM) Diesel Exhaust Fluid Pressure Limiting Unit Circuit Failed Open