Thread: Have a question about this code

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tyv193 Have a question about this... 08-09-2010, 08:59 AM
BillBoost37 Re: Have a question about... 08-09-2010, 09:37 AM
tyv193 Re: Have a question about... 08-09-2010, 09:50 AM
QwikGT Re: Have a question about... 08-09-2010, 11:08 AM
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  1. #1 Have a question about this code 
    GT Level Member tyv193's Avatar
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    Car was inspected a few days ago. Just came up with a code p0420 Catalyst system efficiency below threshold bank 1. So is this something to do with the catalytic converter? My dad didnt know about premium fuel having to go in the car so he put 1/4 tank in to get home. Could that have triggered this code?
    Last edited by Bio248; 08-09-2010 at 09:35 AM. Reason: P0420, not P0240
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