P0125 Closed Loop Temperature Not Reached

SYMPTOM
P-0125 CLOSED LOOP TEMP NOT REACHED

WHEN MONITORED
After engine is started, for ten minutes.

SET CONDITION
The engine temperature does not go above 18 degrees F by 10 minutes after the engine is started. Two trips are required to set this code.

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