P0125 Closed Loop Temperature Not Reached

SYMPTOM
P-0125 CLOSED LOOP TEMPERATURE NOT REACHED

WHEN MONITORED
After engine is started, for ten minutes.

SET CONDITION
The engine temperature does not go above 60 degrees by 10 minutes after the engine is started.

POSSIBLE CAUSES
- ENG cool ant temp sen resistance >= 11.00 k ohms
- PCM conn & term corr, dam, P/O, OR MSW
- PCM defective (coolant system)
- Thermostat defective