Diagnostic Procedures

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DTC P1133: HO2S Bank 1 Sensor 1 - Insufficient Switching & DTC P1153: HO2S Bank 2 Sensor 1 - Insufficient Switching (Steps 1-7)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P1133: HO2S Bank 1 Sensor 1 - Insufficient Switching & DTC P1153: HO2S Bank 2 Sensor 1 - Insufficient Switching (Steps 8-14)

Courtesy of GENERAL MOTORS CORP.