Conditions For Setting DTC
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
The HO2S bank 1 sensor 1 lean-to-rich average transition response time during the sample period was longer than 219 milliseconds; or the HO2S bank 1 sensor 1 rich-to-lean average transition response time during the sample period was longer than 219 milliseconds.