Code Enable Criteria

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Saturn SW2, 2001 Saturn SL2, 2001 Saturn SL1, 2001 Saturn SL, and 2001 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.

Battery voltage is greater than 10.9 volts for greater than 0.5 second.
Engine run time is greater than 45 seconds.

DTC sets when HO2S2 heater current is greater than 2.26 amps with heater commanded on for greater than 0.5 second.