Pcm Code P014 - Shorted Coolant Sensor Signal: Action

PCM turns on SERVICE ENGINE SOON light and uses IAT sensor value instead of coolant sensor value for all calculations during first 10 minutes of operation; it then uses a value of 194°F (90°C).

1. With coolant 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.
2. Checks for shorted sensor or circuit No. 410. If parameter value stays at 142°C or greater with sensor unplugged, short is in circuit No. 410 between terminal "A" and PCM terminal 3E16.
3. Fault is most likely at PCM connector or PCM.