Excess time to enter closed loop code may be set by
- ECT sensor malfunction.
- Thermostat malfunction.
- Cooling fan malfunction.
- Water pump malfunction.
- Coolant passages clogged.
- Coolant leaks.
- Coolant level.
- Check cooling fan system. Repair as needed. Go to next step.
- Check ECT sensor. See ECT SENSOR in «SYSTEM/COMPONENT TESTS»(ref-25100) article. If sensor is bad, replace sensor. If sensor is okay, go to next step.
- Check cooling system. Repair as needed. Go to next step.
- Clear code. Test drive vehicle and recheck codes. If code returns, replace PCM. If code does not return, problem is intermittent.