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.

Commanded air/fuel ratio is 14.7 to 1.
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 between 60 mV and 400 mV with the HO2S bank 2 sensor 2 greater than 499 mV for longer than 10 seconds when exhaust pipe moisture has evaporated (calculated engine run time between 0 and 200 seconds), then engine must run for longer than 80 seconds, EVAP leak diagnostics are not running, and no EVAP purge solenoid or EVAP flow during non-purge DTCs have been set; or HO2S bank 2 sensor 1 signal is between 538 mV and 1080 mV with the HO2S bank 2 sensor 2 less than 104 mV for longer than 10 seconds when exhaust pipe moisture has evaporated (calculated engine run time between 0 and 30 seconds), then engine must run for longer than 80 seconds; or HO2S bank 2 sensor 1 signal voltage rises whenever the heater circuit is being commanded off for 16 out of 24 times the heater is being turned off (heater is turned off once every 10 seconds) when exhaust pipe moisture has evaporated (calculated engine run time between 0 and 30 seconds), then engine must run for longer than 80 seconds.