Diagnostic Aids
WARNING: This page is about a different car, the 2001 Saturn LW200, 2001 Saturn L200, and 2001 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
Most probable cause for DTC is contamination. Check for obvious contamination (oil, fuel or engine coolant) by removing sensor. Identify and correct cause if contaminated. Replace O2S1 sensor.
An intermittent open in signal or ground wire, as well as an inactive sensor, will not set this DTC.