LexES 300 Posted April 29, 2008 Share Posted April 29, 2008 98 Lexus ES300 125000 miles My check engine light came on and here are my codes: P1135: AIR/FUEL RATIO SENSOR HEATER CIRCUIT MALFUNCTION (BANK 1 SENSOR 1) P1155: AIR/FUEL RATIO SENSOR HEATER CIRCUIT MALFUNCTION (BANK 1 SENSOR 1) P1133: AIR/FUEL RATIO SENSOR CIRCUIT RESPONSE MALFUNCTION (BANK 1 SENSOR 1) P1135: AIR/FUEL RATIO SENSOR HEATER CIRCUIT MALFUNCTION (BANK 1 SENSOR 1) P1150: AIR/FUEL RATIO SENSOR CIRCUIT RANGE/PERFORMANCE MALFUNCTION (BANK 2 SENSOR 1) P1153: AIR/FUEL RATIO SENSOR CIRCUIT RESPONSE MALFUNCTION (BANK 2 SENSOR 1) P1155: AIR/FUEL RATIO SENSOR HEATER CIRCUIT MALFUNCTION (BANK 1 SENSOR 1) NOW WHAT?? Quote Link to comment Share on other sites More sharing options...
SRVCM Posted May 7, 2008 Share Posted May 7, 2008 Well, What normally happens is somone would help you. BUT youve only provided the codes and have not done your homework. You are going to have to dig into the book that is provided free at the beginning of the forum and locate the sensors and then ask for help in replacing them. In my experience with forums you dont just join the ask for help then never show up again until you have another problem. Not saying that is what you are doing but to end you request with "Now what" denotes you are expecting for someone to help and you are demanding assistance. its pretty obvious its your air/fuel ratio heater sensor for bank one and bank 2. Where are they is beyone me, I do have a book and can look them up for you if you like but it defeats the purpose of my narration. Some things you have to do for yourself by looking it up and researching on the forum before you go asking questions for help. Good luck Quote Link to comment Share on other sites More sharing options...
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