AboutTed Ritter Expertise I will be able to answer almost all questions relating to the Toyota product line, if I don`t have the answer right away I will use the resources available to me to get an answer for you, it`s that simple. Warranty,special service campaigns,service bulletins etc,or just how to diagnose and repair problems, just ask.
Experience Toyota technician since 1979,expert in electrical systems,OBD systems,engine repair, driveability problems,EFI systems,ASE certified,Toyota master technician. Certified Hybrid Vehicle technician.
Question I have a 2000 4Runner - V6. The check engine light came on. The codes are P0125 and P1135. I'm not sure what they mean. Can you tell me what they mean and are they something that has to be addressed right away or can I continue to drive the vehicle without doing any damage. Thank you
Answer The P1135 code is an air/fuel ratio sensor malfunction code bank one sensor one( translation) the air/fuel ratio sensor located just in front of the catalityc converter needs to be replaced on the right side. The PO125 is diectly related and can be ignored, replacing the sensor fixes both. It should be replaced as soon as possible,although
there is almost no noticeable driveability issue, it can affect fuel mileage to some degree and may cause the engine to run too lean/rich. So replace it when you can but there's no need to park it until it can be replaced.
