Check Engine Light...?

[NewMStang]

I recently had a check engine light turn on in my car so I went ahead and had the car scanned. The code that I got was PO125; the amount of time for the coolant temp. sensor to reach an input value consistent with closed loop operation was too excessive (coolant temp is always low). Any ideas what the fix may be here? I recently had my p/s pump changed but i doubt there's any correlation.

 

[COramprat]

Coolant sensor may be faulty but reset the code to make sure it isn't a false reading.

 

[Mike97gt]

there is a few things that can cause this..

You could have a bad thermostat... You could also have a low coolant condition where the sensor is not submerged in coolant.. you could have a bad sensor.. the CHT or ECT could be unplugged..

DO you have good heat? Does the temp reading go up as it should?