Conditions for Setting the DTC
WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The PCM detects all of the following conditions:
- The calibrated amount of engine run time has been met.
- The calibrated amount of engine air flow has been met.
- The calibrated vehicle speed and distance have been met.
- The calibrated minimum ECT of 79°C (175°F) has not been met when the IAT is more than 10°C (50°F).
OR
The calibrated minimum ECT of 55°C (131°F) has not been met when the IAT is between -7 and +10°C (+19 and +50°F).