Code P0430

Lincoln LS

  1. DMcBrideBoston

    DMcBrideBoston Well-Known LVC Member

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  2. Frogman

    Frogman Dedicated LVC Member

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    I promise to nicer if you promise to be smarter.
    The simplest thing to do is to reset the code and see if it comes back.

    Then inspect for exhaust leaks.

    Next step is to measure the voltage at the oxygen sensor on Bank 2 (the passenger side rear sensor, or the sensor after the converter). The voltage should be low and steady (~200mV, depends on the vehicle, I don't know what the LS sensors will pull). If the voltage varies (e.g. 100mV to 600mV) then it's time to replace the catalytic converter. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.
     
  3. tets

    tets Active LVC Member

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    Bank 2 is the drivers side rear sensor
     
  4. DMcBrideBoston

    DMcBrideBoston Well-Known LVC Member

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    I already reset the code and it does come back in.

    The exhaust is brand new, only 2 months old.
     
  5. DMcBrideBoston

    DMcBrideBoston Well-Known LVC Member

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    How do I measure the voltage? Do I need to splice into the wires of the O2 sensor?
     
  6. Eliot_Ness_Ls

    Eliot_Ness_Ls Dedicated LVC Member

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    What exhaust is it?
     

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