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05-08-2012, 11:23 AM
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#1 |
 
Drives: black2ss Join Date: Jul 2010
Location: pompano beach fl
Posts: 253
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code po420
i have jba high flow cats on a 2010 camaro 2ss with corsa cat back exhaust. and I am getting code po420 The Alldata said it is Catalyst system low efficiency bank 1. What does this mean and what do I do to fix it. Help me thanks.
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05-08-2012, 11:45 AM
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#2 |
 
Drives: 2019 GMC Sierra 1500 AT4 Join Date: Nov 2011
Location: Orange, TX
Posts: 740
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This is a known issue with JBA high flows. You can clear the code every time it comes up or you can get tuned. The solo high flows are less susceptible to CELs.
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2019 GMC Sierra 1500 AT4
Summit White 6" Lift, 37x13.50R24's |
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05-08-2012, 10:03 PM
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#3 |
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Drives: black2ss Join Date: Jul 2010
Location: pompano beach fl
Posts: 253
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got it fix
it was a bad cat it was clogged up and my car was running bad
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05-26-2013, 06:08 PM
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#4 |
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Had the same thing happen with Kook's high flow cats after about 4 months. I tightened everything up, reset the code and retuned the car. So far, so good.
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10-02-2015, 09:45 PM
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#5 |
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WrkrBee
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How do you know which one is throwing the codes..auto parts store said there are 4, 2 front and 2 rear !
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 2016 Hyper Blue w/ Pearl White Rally Stripes, Black Interior 2LT/RS V6 A8, Lights, Memory & Convenience Options Sunroof 2011 2 LT/RS Victory Red V6 M6 |
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