DESCRIPTION:This code sets when there is a code present for the Diesel Exhaust Fluid (DEF) tank level, DEF Dosing Unit, DEF Pump, NOx Sensors, Blocked DEF Line, DEF Quality, NOx Efficiency, Selective Catalyst Reduction (SCR) Harness and/or SCR sensor.
MONITORED PARAMETER:SCR and Diesel Particulate Filter (DPF) sensors.
TYPICAL ENABLING CONDITIONS:Always enabled
MONITOR SEQUENCE:None
EXECUTION FREQUENCY:Always enabled
TYPICAL DURATION:Two seconds
DASH LAMPS:CEL
ENGINE REACTION:25 percent derate.
VERIFICATION:1. Parked SCR efficiency test for extended SCR faults.2. High idle regeneration for DPF and NOx faults.
NOTE: For 2010 emission engines, if 5246-0, 5246-15, or 5246-16 are the only faults present, please troubleshoot code 3361-7 instead.
NOTE: This is a government mandated code which informs users that fault code has been active for longer then a government specified time interval.