DTC P0125: ECT Sensor Malfunction/Slow Response (2006 Model)

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the GENERAL TROUBLESHOOTING INFORMATION .

Start the engine, and let it idle for 5 minutes or more.
Check the ECT SENSOR in the DATA LIST with the HDS.
Is about 10°F (-12°C) or less, or 4.45 V or higher indicated?
1. YES - Go to step 3.
2. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the ECT sensor and the ECM/PCM.
Turn the ignition switch OFF.
Replace the ECT sensor (see ECT SENSOR REPLACEMENT ).
Turn the ignition switch ON (II).
Reset the ECM/PCM with the HDS.
Do the ECM/PCM IDLE LEARN PROCEDURE .
Allow the engine to cool to outside temperature.
Start the engine, and let it idle for 20 minutes.
Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
1. YES - If DTC P0125 is indicated, check for poor connections or loose terminals at the ECT sensor, and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.
2. NO - Go to step 11.
Monitor the OBD STATUS for DTC P0125 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
1. YES - Troubleshooting is complete.
2. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the ECT sensor and the ECM/PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 8. and recheck.