Conditions for Setting the DTC: P0131
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
- The engine control module (ECM) detects that the HO2S 1 signal voltage is less than 78 mV for more than 51 seconds.
OR
- The ECM detects that the HO2S 1 signal voltage is less than 598 mV during PE mode for more than 7.5 seconds.
- This diagnostic runs continuously.