My point was that if the original poster ( and many of the others that have posted code # questions ) researched the full code description / conditions that set it, they would have a better understanding of what is going on.

What does the scan tool data show for coolant temp and coolant temp voltage? I say to check voltage ( even with a meter at the sensor / computer ) because on a few OBD one systems I've had sensor wiring fail and the computer substitute a believable value for coolant temp but the sensor voltage was incorrect.

I don't know if the posters OBD two system would sub a value or not.

Can engine coolant temp still be brought up on the HVAC display like the older cars?