DESCRIPTION:This code sets when the Diesel Exhaust Fluid (DEF) pump speed is higher than normal for a given DEF pressure.
MONITORED PARAMETER:1. DEF Pump Speed.2. DEF Pressure.
MONITOR SEQUENCE:None
EXECUTION FREQUENCY:Continuous when enabling conditions met.
TYPICAL DURATION:Continuous until resolved.
DASH LAMPS:1. MIL2. CEL
ENGINE REACTION:Derate 25%
VERIFICATION:SCR ADS Self-Check.
NOTE: If any other codes are present, repair them first.
PROBABLE CAUSES:1. Check connectors & wiring for: DEF dosing unit, DEF pump, Aftertreament Control Module, Chassis/ATS harness wiring/connector.2. Contaminated DEF tank (Fuel, water, etc…).3. Check DEF lines for blockages, kinks, cracks, etc…4. DEF doser unit inlet screen.5. DEF suction filter.6. Pressure relief valve.7. DEF tank header.