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 200 seconds), then engine must run for longer than 80 seconds.
Calculated converter temperature is less than 800°C (1472°F).
Main relay voltage is greater than 10.5 seconds.

DTC sets if HO2S bank 1 sensor 2 signal is inactive (not fluctuating outside 401-519 mV) for longer than 10 minutes; or HO2S bank 1 sensor 2 calculated internal resistance is greater than 40 k/ohms when calculated exhaust gas temperature is greater than 1112°F (600°C).