Oxygen Sensors & Components | Air/Fuel Ratio Sensors Oxygen Sensor Wiring Harness by ACDelco®. If your O2 Sensor is not functioning properly, you are robbing yourself of performance and costing yourself money at the gas pump. When the sensor becomes contaminated it loses the capability to quickly react to changes in the air/fuel mixture, resulting in reduced converter efficiency and Oxygen sensor wire harness test - ScannerDanner Forum Apr 04, 2017Oxygen sensor wire harness test was created by babajis2010 I am from Sweden and I bought a Toyota Avensis verso 2002 gasoline vvti with DTC's P1135, P1155, P0161. I discovered that the two A/F sensors upstream are not the right part number for the car and I have ordered the right OEM part from Toyota company here.
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