Conditions For Running The DTC

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC will run under the following conditions:

The components are powered, and ignition voltage is greater than 9 volts and less than 18 volts.
Engine has been running for 2 seconds.
Engine speed is greater than 200 RPM and less than 7500 RPM for 5 seconds.
Engine speed is above 450 RPM and output speed is above 100 RPM.
The transmission fluid temperature is -31°F (-35°C) to 300°F (149°C).