DESCRIPTION:
Diesel exhaust fluid (DEF) tank temperature sensor circuit failed high.

MONITORED PARAMETER:
DEF tank temperature sensor.

TYPICAL ENABLING CONDITIONS:
Always enabled

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
Two seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
25% Derate. After four hours, engine will be idled after ignition key cycle.

VERIFICATION:
Engine Idle: one minute.

PROBABLE CAUSES:
1. DEF tank level/temperature sensor harness/connector.
2. DEF tank level/temperature sensor.