Detroit DD16 GHG14 (2014-16) Fault Code: SPN 1761 FMI 4 (ACM) Diesel Exhaust Fluid (DEF) Tank Level Sensor Circuit Failed Low

DESCRIPTION:
DEF tank level sensor circuit failed low.

MONITORED PARAMETER:
DEF tank level sensor.

TYPICAL ENABLING CONDITIONS:
Always enabled.

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Always enabled

TYPICAL DURATION:
2 seconds

DASH LAMPS:
1. MIL
2. CEL

ENGINE REACTION:
1. 25% derate.
2. After 4 hours engine will be idled after ignition key cycle.

VERIFICATION:
Engine Idle: One minute.

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