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Got the engine codes PO420 and PO430.

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Old Sep 3, 2012 | 01:31 AM
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Default Got the engine codes PO420 and PO430.
What are some things I can do to remove the codes ??
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Old Sep 3, 2012 | 11:38 AM
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Fix your cats first, then clear your SES light
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Old Sep 3, 2012 | 11:47 AM
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From: Schiller Park, ILL Member: #317
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Originally Posted by Ricmiester
What are some things I can do to remove the codes ??
Custom tuning or O2 sims can render these codes removed/disabled.
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Old Sep 3, 2012 | 03:40 PM
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How much are sims? Also can you point to where I can buy them ?
I dont have 700 to buy 2 bold on cats at this moment lol.
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Old Sep 3, 2012 | 04:26 PM
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From: Schiller Park, ILL Member: #317
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Originally Posted by Ricmiester
How much are sims? Also can you point to where I can buy them ?
I dont have 700 to buy 2 bold on cats at this moment lol.
Brand new O2 sims are about $100, but you can sometimes find them used for much less. They aren't popular any longer, because most people just get custom tuning to delete these codes. A basic tune will often run around $150 or so, and can ditch these codes plus make other basic changes to your PCM at the same time - so most people just go that route.

If you really want sims though, Speed Inc is one of the last places that I know of to buy them new. www.ls1speed.com
Last edited by RPM WS6; Sep 3, 2012 at 04:33 PM.
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Old Sep 3, 2012 | 05:56 PM
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What exactly do you mean by custom turn? I'm tuning the car noW.I just changed all fluids and oil filter just have to change spark plugs. I have coil packs they're still good
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Old Sep 3, 2012 | 07:00 PM
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He means tuning the computer not the ignition.
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Old Sep 4, 2012 | 02:47 PM
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If its an '02 car you may just barely make it for the 10 year 120k mile converter warranty. Call the dealer with your VIN and see if your covered. I can tell you too if your comfortable giving me the last 8 of your VIN.
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