HO2S Diagnostic Enable

WARNING: This page is about a different car, the 1997 GMC Savana, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

No TP sensor DTCs are set.
No EVAP DTCs are set.
No IAT sensor DTCs are set.
No EGR DTCs are set.
No ECT sensor DTCs are set.
No misfire DTCs set.
No intrusive test in progress.
No device controls active
System voltage is greater than or equal to 9 volts.