DTC Parameters

WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Exhaust pipe moisture has evaporated (calculated engine run time between 0 and 30 seconds), then engine must run for longer than 80 seconds.
Calculated exhaust gas temperature is less than 1472°F (800°C).
Main relay voltage is greater than 10.5 volts.

DTC sets if HO2S bank 2 sensor 1 signal is inactive (not fluctuating outside 400-538 mV) for longer than 6.4 seconds when commanded air/fuel ratio is 14.7 to 1; or both HO2S bank 2 sensor 1 and HO2S bank 2 sensor 2 signals are greater than 200 mV for longer than 0.1 second when ECM is in fuel cutoff mode for longer than 3 seconds; or HO2S bank 2 sensor 1 calculated internal resistance is greater than 20 k/ohms when commanded air/fuel ratio is 14.7 to 1.