DTC P0125 - Excessive Time To Enter Closed Loop
- Disconnect negative battery cable. Drain cooling system. Disconnect ECT sensor harness connector and remove sensor from engine. Using an ohmmeter, measure resistance of ECT sensor while immersed in container of water. Heat or cool water and compare with values of ECT SENSOR RESISTANCE table. Replace ECT sensor if resistance is not as specified. If ECT sensor is okay, go to next step.
ECT SENSOR RESISTANCE
| Temperature °F (°C) |
Ohms |
| 32 (0) |
5210-6370 |
| 68 (20) |
2210-2690 |
| 104 (40) |
1140 |
| 140 (60) |
580 |
| 176 (80) |
290-350 |
- Check thermostat for proper operation. Replace thermostat if necessary. If thermostat is okay, replace PCM. Retest system.