Doctorein Posted May 23, 2011 Report Share Posted May 23, 2011 while getting a diagnose done for my 2001 Tundra the error codeP1135 came up and i dont know hat it means so please help Link to comment Share on other sites More sharing options...
kelum Posted May 25, 2011 Report Share Posted May 25, 2011 P1135 Air/Fuel sensor heater circuit response (bank 1 sensor1). It would be your o2 sensor. Bank one sensor one is the upstream sensor.... Pre cat.... The sensors simply screw in one side and plug into the other. Dont buy a universal o2 sensor.... There may be wiring involved, spend the extra bucks and by an OE sensor. PS since it upstream not down stream your pretty safe knowing its the sensor, Had it been an error in the downstream sensor it may have been the cat. Link to comment Share on other sites More sharing options...
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