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CEL code p0420 (lol 420)

 
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Old 10-03-2007, 02:02 AM
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CEL code p0420 (lol 420)

ok so i a lil after i got an oil chanine i got the cel code P0420 i unhooked the batter over night and it cam back on a few day latter i sen a lil bit of smoke coming from the flex pipe the day after i had it done and my new muffler has got black resadue on it alreaday so what do i need to thel the shop to fix it under warenty so idc how much it will cost
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Old 03-24-2008, 02:22 AM
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wow one of my first post i was so young back then and dume lol ok i still am now
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Old 03-24-2008, 02:23 AM
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lol did u ever got that sorted out?
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Old 03-24-2008, 02:29 AM
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well as far as i could tell i was geting oil in somewear i think like a oring n the valves or w/e so i ran gas treatment clener and stuff and some restore for a good bit then cleaned the o2 and cat reset it and it never cam back on
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Old 03-24-2008, 08:24 PM
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^nice.



A code P0420 may mean that one or more of the following has happened:

* Leaded fuel was used where unleaded was called for
* An oxygen sensor is not reading (functioning) properly
* The engine coolant temperature sensor is not working properly
* Damaged or leaking exhaust manifold / catalytic converter / exhaust pipe
* Retarded spark timing
* The oxygen sensors in front and behind the converter are reporting too similar of readings


taken from: obd-codes.com
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