P013A and P013E

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 system voltage is between 11-18 volts.
Prior to deceleration fuel cutoff (DFCO), the HO2S 2 voltage was more than 55 mV.
During this drive cycle, the HO2S 2 voltage was 0.48-1.15 volts for more than 0.6 seconds.
The rear O2 sensor is active and has transitioned once from rich to lean.
The modeled exhaust gas temperature is greater than 500°C (932°F).
The primary air/fuel sensor is ready.
THEN
The decel fuel cut-off (DFCO) is active.
The primary air/fuel sensor indicates lambda is greater than 3.
This DTC runs each time the above conditions are met.