DTC P0133: Bank 1 Ho2S No. 1 Circuit - Slow Response Time: Condition
WARNING: This page is about a different car, the 2002 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0133 is set when time for Bank 1 HO2S No. 1 to change from lean to rich or from rich to lean is longer than specified when engine is at idle. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.