Detroit DD15 GHG14 (2014-16) Fault Code: SPN 4358 FMI 5 (ACM) Diesel Exhaust Fluid Metering Unit Doser Heater Circuit Failed Open

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

PROBABLE CAUSES:
1. If code not active, release vehicle to customer.
2. Failed diesel exhaust fluid metering unit doser heater.
3. DEF metering unit doser heater connector/harness to ECM.