Conditions for Setting the DTC
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the HO2S signal voltage increases greater than 2 volts within 0.04 second, in 4 out of 6 HO2S heater switch OFF samples.
- The condition exists for greater than 4 seconds, or for a cumulative of 50 seconds.