DTC P0125 - Excessive Time To Enter Closed Loop
WARNING: This page is about a different car, the 1996 Suzuki Sidekick. However, it is still accessible from the selected car via links, so may be relevant.
- 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 the ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
table. Replace ECT sensor if resistance is not as specified. If ECT sensor tests okay, go to next step.ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
Temperature °F (°C) Ohms 32 (0) 5740 68 (20) 2280-2610 104 (40) 1150 140 (60) 584 176 (80) 303-326 - Check thermostat for proper operation. Replace thermostat if necessary. If thermostat is okay, replace PCM. Retest system.