Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4353 FMI 3 (ACM) Diesel Exhaust Fluid Metering Unit Diffuser Heater Circuit Failed High

NOTE: Please see the step by step troubleshooting procedures for this specific code.

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 DD15 EPA10 (2010-13) Fault Code: SPN 4337 FMI 4 (ACM) Diesel Exhaust Fluid Temperature Sensor Circuit Failed Low

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4337 FMI 3 (ACM) Diesel Exhaust Fluid Metering Unit Temperature - Drift

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4337 FMI 2 (ACM) Diesel Exhaust Fluid Metering Unit Temperature - Drift

Detroit DD15 EPA10 (2010-13) Fault Code: SPN 4336 FMI 5 (ACM) Diesel Exhaust Fluid Pressure Limiting Unit Circuit Failed Open

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