Detroit DD15 GHG14 (2014-16) Fault Code: SPN 111 FMI 4 (CPC) Coolant Level Circuit Failed Low

DESCRIPTION:
This fault sets when the common powertrain controller (CPC) detects that there is a short to ground on the coolant level circuit or the engine coolant level is low.

MONITORED PARAMETER:
Coolant level

TYPICAL ENABLING CONDITIONS:
Always on

MONITOR SEQUENCE:
None

EXECUTION FREQUENCY:
Continuous when enabling conditions met.

TYPICAL DURATION:
Two seconds

DASH LAMPS:
CEL

ENGINE REACTION:
None

VERIFICATION:
Cycle key

NOTE: If any other active fault codes, fix those first.

PROBABLE CAUSES:
1. Low coolant.
2. Coolant level sensor connector/harness.
3. Coolant level sensor.
4. Cooling system leaks.
5. Radiator cap failure.