Club4G Forum : Mitsubishi Eclipse 4G Forums - 2006-2012 Eclipse Authority - View Single Post - Code P0431
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Old June 29th, 2020, 07:15 PM   #6 (permalink)
Walketfretts
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Originally Posted by pcfreak4 View Post
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Originally Posted by Walketfretts View Post
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Originally Posted by pcfreak4 View Post
Bad catalytic converter in your exhaust

It could be very bad depending on how bad it gets

It’s clogged up and eventually once it clogs up too much your engine will lose serious power, possibly overheat, and the cat could break apart and get sucked back into your engine or shot further dow your exhaust getting stuck in the next cat
So to the shop it goes?
Is your car the 4cyl or 6cyl? Aftermarket exhaust headers? Tune? When were the O2 sensors replaced last?
4cyl SE, stock exhaust, stock tune, did a intake resonator delete and fuel bypass, O2 sensors were replaced about 5months ago i belive.
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