P0140 or P0160
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the HO2S voltage is between 401-519 mV, when the calculated exhaust temperature is colder than 800°C (1472°F).
- The ECM detects that the HO2S voltage is between 401-548 mV, when the calculated exhaust temperature is 800°C (1472°F) or warmer.
- The ECM detects that the measured internal resistance of the HO2S is greater than 40,000 ohms, when the calculated exhaust temperature is warmer than 450°C (802°F).
- The ECM detects any of the above conditions for greater than 1 second or for a cumulative of 10 seconds.