Pcm Code E014, Shorted Coolant Sensor Circuit: Action

PCM turns on SERVICE ENGINE SOON light and uses MAT sensor value instead of coolant sensor value for all calculations for first 4 minutes of operation; after 4 minutes, PCM uses a value of 194°F (90°C).

1. With coolant sensor shorted, PCM parameter ED04 should indicate 298°F (148°C) or more. If ED04 does not indicate 298°F (148°C) or more, sensor is not shorted. See NOTE ON INTERMITTENTS.
2. This checks for a shorted coolant sensor or a short in circuit No. 410. If parameter stays at 142°C or greater with sensor unplugged, short is in circuit No. 410 between terminal "B" and PCM terminal E16.
3. Fault is most likely at PCM connector or PCM.