TSB: Some 2009 ? 2012 model year RAV4 and 2010 ? 2011 model year Camry vehicles equipped with 2AR-FE (non-PZEV) engines may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0138 (Oxygen Sensor Circuit High Voltage [Bank 1 Sensor 2]). This condition may be caused by incorrect air fuel ratio sensor response. The Engine Control Module/ECM (SAE Term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring. Follow the Repair Procedure in this bulletin to address this condition.
