Engine light and code P0420
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Thread: Engine light and code P0420

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    Member Evil pumpkin's Avatar
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    Engine light and code P0420

    I got the engine light on and have a P0420 code. Problem with my Catalyst. Has anyone had this problem and what cured it. I think I will clear the code and see if it comes back. If it comes back I’m sure I will take it in to have it looked at. Just was wondering if anyone else had this issue and what they did.
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    Quote Originally Posted by Evil pumpkin View Post
    I got the engine light on and have a P0420 code. Problem with my Catalyst. Has anyone had this problem and what cured it. I think I will clear the code and see if it comes back. If it comes back I’m sure I will take it in to have it looked at. Just was wondering if anyone else had this issue and what they did.
    Check to see if the wires to the rear 02 sensor have become burnt and are now either shorted or are burnt through and no longer conduct electricity. P0420 is for Block 1 which is the driver's side exhaust while a P0430 is for Block 2 - passenger's side system.
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