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P1135 Diagnostic Trouble Code Discussion for January 2009

Air Fuel Ratio Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1135
Help Request Posted
2000 Lexus RX300 3.0L MIL Lamp on VIN: JT6HFOUXYO
P1135: A/F circute heater malfunction bank1 sen. 1. Customer had before mentioned parts replaced by other shops. We check and found Aifr fuel sensor voltage won't change much. 3.29 to 3.3V no matter what. With new air fuel sensors in I tried used ECU. Same problem. I then tried another denso A/F sensor. Still c...
January 26, 2009