P0118

DTC P0116
Engine coolant temperature sensor input fault Drive cycle D:Signal implausible.

DTC P0117
Engine coolant temperature sensor input fault Drive cycle D:Signal out of range - below minimum.

DTC P0118
Engine coolant temperature sensor input fault Drive cycle D:Signal out of range - above maximum.

Possible causes by suggested order of priority:
^ Connectors C196, ECM C636 (B).
^ Open circuit - C636/22 (G) to C196/2 (G).
^ Open circuit - C636/21 (RB) to C196/1 (KB).
^ Engine cooling system problem.
^ Engine coolant temperature sensor fault.

Connectors C196, ECM C636 (B).
CONNECTOR
^ Check for connector not correctly latched, backed out pins, damaged pins, corroded pins.

Open Circuit - C636/22 (G) to C196/2 (G).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Open Circuit - C636/21 (RB) to C196/1 (KB).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Engine Cooling System Problem.
CHECK THE FOLLOWING:
^ Check if the engine does not fully warm up within the normal time.
^ Check that there is not a problem with the cooling system thermostat sticking open.

NOTE: - the diagnostic will flag a fault if the coolant temperature does not rise at the expected rate.

POSSIBLE FAULTS
^ Engine cooling system fault.
^ Coolant thermostat fault.

Engine Coolant Temperature Sensor Fault.
CHECK THE FOLLOWING:
^ Check coolant temperature sensor by substitution with a known good unit.
POSSIBLE FAULTS
^ Engine coolant temperature sensor fault.