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DTC P0133: O2S Circuit. Slow Response (Sensor 1): Notes

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying O2S Circuit Diagram - Slow Response - Sensor 1
G03503887Courtesy of SAAB-SCANIA OF AMERICA, INC.