Diagnosis & Repair
WARNING: This page is about a different car, the 2003 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
For wiring diagram, see DTC P0031: OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW (BANK NO. 1 SENSOR NO. 1) & DTC P0032: OXYGEN SENSOR HEATER CONTROL CIRCUIT HIGH (BANK NO. 1 SENSOR NO. 1) . For diagnosis and repair, see Fig 1 and Fig 2 .