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1993 Honda Accord Check Engine Light

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  • #864567
    JimJim
    Participant

      Hey Guys, my 1993 Honda Accord is displaying OBD 1 CODE 43 = 43 ” Heated oxygen sensor circuit or problem in the fuel supply system”. What could be causing that code to display? Thanks in advance, Jim

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    • #864570
      KenKen
      Participant

        Hey Jim, welcome to the forums!

        From my experience with older Honda’s I’d highly recommend getting the fuel pressure tested before spending money on parts.

        Does your Accord feel down on power, or does the exhaust smell rich?

        When was the last time the fuel filter was changed, this is something that’s commonly overlooked.

        Regards.

        #864604
        RobRob
        Participant

          best way is to test with a scope… you can use a mult meter to test the O2 but sometimes it will test good even if its bad…. feul you shoud test with a pruessure gadge and also test the fluel rate to make sure it is ok… also have you ever replaced the feul filter… if it hasnt been ever replaced… I would replace it because its probly at the end of its life any was… for a 93

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