OBD Code P0421

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OBD Code P0421

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Mitsubishi >> Mitsubishi Models >> Mitsubishi Eclipse & Eclipse Spyder >> 3rd Generation >> OBD Code P0421

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OBD Code P0421 - 5/11/2008 1:17:27 PM

jmil

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What do you all think - My daughter came home with a check engine light. Ran it up at AutoZone and got a P0421. Reset was successful!

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RE: OBD Code P0421 - 5/11/2008 1:45:34 PM

Sebba

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From: San Antonio, TX
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Thats emissions, more specifically catalytic converter.

Minor, and if the car has near 100k miles, thats about right for it to be replaced anyways. Me thinks your daughter was driving a little enthusiastically at the time

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These cranks are made for walkin'''', and thats just what they''''ll do, one of these days these cranks are gonna walk all over you

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RE: OBD Code P0421 - 5/11/2008 1:53:26 PM

jmil

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Would you believe 220K miles

Never had it changed - Question estimate of cost?

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RE: OBD Code P0421 - 5/11/2008 2:03:52 PM

Sebba

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From: San Antonio, TX
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Depending on if you like to be dealer raped. You do it yourself, will cost you about 150 bucks depending where you get it. An OEM catalytic converter is about 350 last time I looked. The advantage of that, is a warrenty.

Holy hell 220k!

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These cranks are made for walkin'''', and thats just what they''''ll do, one of these days these cranks are gonna walk all over you

(in reply to jmil)

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RE: OBD Code P0421 - 5/11/2008 8:07:05 PM

PoolhallJunkie777

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sebba, catch me if i am wrong..but doesnt 3gs have like four cats? i guess it would be the final cat right?

anyways, if you dont want to do it yourself...muffler shop will do it fairly cheap and quick

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1990 Chevy lumina - R.I.P.
2004 Mitsubishi Eclipse GTS - (Once I do something good for it, something bad happens)

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RE: OBD Code P0421 - 5/11/2008 8:18:06 PM

Sebba

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From: San Antonio, TX
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Who the hell knows what one it is.

But yes, a muffler shop will do it for a lot less.

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These cranks are made for walkin'''', and thats just what they''''ll do, one of these days these cranks are gonna walk all over you

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RE: OBD Code P0421 - 5/12/2008 2:21:42 PM

dsm1990gsx

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Po421 is warm up cataylst below threshold bank 1. So I would get the cat replaced on bank one. If there are 4 cats only replace the one monitored by the 02 sensors.

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1990 Tsi Awd daily driver
2007 Jeep Wrangler power wheels daughters car...soon to be converted from 12v to 24v

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