Code P014, Shorted Engine Coolant Temperature (ECT) Sensor: Action

PCM turns on MIL and uses IAT sensor value instead of engine coolant temperature sensor value for all calculations during first 10 minutes of operation; PCM then uses a value of 194°F (90°C).

NOTE: Test numbers refer to numbers on diagnostic chart.

With ECT sensor or wiring shorted, PCM parameter PD04 should indicate 298°F (148°C) or greater. If PD04 does not indicate 298°F (148°C) or greater, sensor or wiring is not shorted. See NOTE ON INTERMITTENTS.
Checks for shorted sensor or circuit No. 410. If parameter value stays at 147°C or greater with sensor unplugged, short is in circuit No. 410 between sensor terminal "B" and PCM terminal 3E16.
Check PCM connector for improper mating. Fault is most likely at PCM connector.