Conditions for Setting the DTC: P2271
WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the HO2S 2 voltage oscillations are faster than a calibrated value.
- DTC P2271 sets within 600 seconds when the above condition is met, or within 1,200 seconds when the fuel level is low.