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2001 Toyota Highlander Question: Codes P420 and P1150. Do I need to replace the tailpipe and sensor?



virgiet, 3.0L V6, Mount Pleasant, SC, May 18, 2011, 18:14

My car shows codes P420 and P1150 after having P1135 A/F sensor Bank 1 Sensor 1 replaced. Now dealer is saying I need to replaceexhaust pipe to repair leak. Est. of repairs is 1300. Any one know about this stuff?

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  • Answer #1

    May 18, 2011, 23:32

    A P0420 is a Catalytic Converter code, indicating that it is no longer working properly. A P01150 is a rear oxygen sensor code, this is the sensor that monitors the efficiency of the Catalytic Converter. I am stunned that it costs 1300 to fix an exhaust leak, usually that is a $50 welding job.

    How about a second opinion, because I don't that the dealership is explaining to you what your real problem is very clearly.

    here are some shops:


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