DESCRIPTION:High side digital output circuit failed high.
MONITORED PARAMETER:DEF dosing unit voltage.
TYPICAL ENABLING CONDITIONS:DEF dosing enabled.
MONITOR SEQUENCE:None
EXECUTION FREQUENCY:Continuous when enabling conditions met.
TYPICAL DURATION:Five seconds
DASH LAMPS:1. MIL2. CEL
ENGINE REACTION:Derate 25%
VERIFICATION:Parked regen
PROBABLE CAUSES:1. DEF Dosing unit connector.2. Wiring between the DEF dosing unit and ECM.
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