DTC P0135, P0141, P0155 & P0161: Ho2S Heater Circuit - Bank 1 & 2, Sensors 1 & 2: Notes
WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
To locate components, see COMPONENT LOCATIONS . For circuit reference, see WIRING DIAGRAMS article. For connector terminal identification, see CONNECTOR IDENTIFICATION .