Conditions For Setting DTC
WARNING: This page is about a different car, the 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The average O2S 1 response times are more than 1174 mS for rich to lean sweeps or 1008 mS for lean to rich sweeps, or the cycle time is more than 1491 mS.