DESCRIPTION:Over Pressurized Diesel Exhaust Fluid (DEF) System.
MONITORED PARAMETER:DEF Pump Speed vs. DEF Pressure.
TYPICAL ENABLING CONDITIONS:1. DEF pump enabled.2. On-Off-Cycle request.
MONITOR SEQUENCE:None
EXECUTION FREQUENCY:Continuous when enabling conditions met.
TYPICAL DURATION:2 minutes
DASH LAMPS:1. MIL2. CEL
ENGINE REACTION:None
VERIFICATION: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. Doser unit failure.4. DEF return line failure.5. DEF tank header failure.
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 4374 FMI 0 (ACM) Under Pressurized Diesel Exhaust Fluid System
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 4364 FMI 18 (ACM) SCR NOx Conversion Efficiency Low
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 4364 FMI 1 (ACM) SCR NOx Conversion Efficiency Very Low
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 4363 FMI 20 (ACM) SCR Temperature Drift – Inlet Low/Outlet High
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 4363 FMI 8 (ACM) SCR Outlet Temperature Signal Spike
Detroit DD13 GHG14 (2014-16) Fault Code: SPN 4363 FMI 4 (ACM) Selective Catalyst Reduction Outlet Temperature Sensor Circuit Failed Low