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.

BARO pressure is greater than 72 kPa.
Engine coolant temperature is 167-257°F (75-125°C).
Intake air temperature is 68-141°F (20.5-60.5°C).
Engine operating in closed-loop.
Engine has run for 6-8 minutes off idle in order to initiate test.
Battery voltage is 9.0-16.0 volts.
Fuel ethanol content is less than 14 percent.

Failure to meet the necessary requirements may produce inaccurate test results.