Conditions for Setting the DTC: P013B
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 EWMA of the normalized integral value equals 8.5 integral units.
OR
- The ECM detects that the accumulated mass air flow monitored during lean-to-rich transitions between 550-775 mV is more than 15 grams.