Conditions for Setting the DTC: P2270
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects that the O2 sensor cannot achieve voltage equal to or more than 775 mV.
AND
- The ECM detects that the accumulated mass air flow monitored during the Stuck Lean Voltage Test is more than 45 grams.