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#1
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Gas gage problem & code po420
gas gage say full when empty and empty when full and so on, and i got he code p 420 what does it mean how do i fix? thank
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#2
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Re: Gas gage problem & code po420
Welcome to AF. 0420 can be a bad cat or sensor after the cat, but the proper diagnosis of this can be complex. If you do a site or google search you will find lots of info. Sounds like a bad connection or tank sending unit. BTW, in the future post the year engine and mileage of your car.
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#3
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Re: Gas gage problem & code po420
Thank For The Help
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