DTC P0125 - ECT Excessive Time To Reach Closed Loop: Notes

NOTE: For circuit reference, see Code P0117 schematic.

While engine is warming, PCM reads Engine Coolant Temperature (ECT) sensor to determine how long it takes coolant to reach temperature required for closed loop operation. PCM compares actual time required to a predetermined time.

Conditions required to set DTC are:

Vehicle speed is greater than 5 MPH (8 kM/h).
No P0112, P0113, P0117, P0118, P111, P1112, P1114 or P1115 are set.
Start-up IAT greater than 32°F (0°C).
Start-up engine coolant temperature between -5-84°F (-20.5-29°C).
Closed loop operation temperature of 84°F (29°C) not reached within 2 minutes of start-up.