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    rrojasstx's Avatar
    rrojasstx Posts: 1, Reputation: 1
    New Member
     
    #1

    Sep 24, 2008, 03:04 PM
    2001 check engine light won't stay off
    Hello!
    My check engine light came on and I had the catalytic converter replaced and the O2 sensors as well. I am not sure if they replaced 3 or 2 but will verify. The light still comes on and the code is still the same, catalytic converter. What can I do?
    kitch428's Avatar
    kitch428 Posts: 1,440, Reputation: 152
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    #2

    Sep 24, 2008, 04:59 PM

    Well, I can speak for Toyota's, that I've seen many aftermarkets installed and the code comes back. The fix was an oem converter.
    I've heard this on many other makes too.
    this8384's Avatar
    this8384 Posts: 4,564, Reputation: 485
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    #3

    Sep 25, 2008, 11:09 AM

    I assume the code that's being stored is a P0420? If so, there has been some information released by the Wisconsin DOT that states that a P0420 code isn't always a faulty converter. They list possible causes as:
    • Damaged pre-cat exhaust manifold or pipe
    • A faulty downstream oxygen sensor
    • High fuel pressure
    • A faulty coolant temp sensor
    • A cylinder misfire

    I would explore those options as well before resigning to another converter. Good luck!

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