Conditions For Running DTC

WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Non Scan Tool Service Bay Test Equipped Vehicles

BARO pressure is greater than 75 kPa.
Fuel level is 1/4-3/4.
Battery voltage is 10-18 volts.
The test will initiate only after a cold start. The control module considers the engine to be cold if the following conditions are met: The ECT and IAT is 39-86°F (4-30°C), the difference between ECT and IAT is less than 14°F (8°C) and fuel ethanol content is less than 11 percent.