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Audi a4T 2007

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Old 04-13-2016, 11:54 AM
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Default Audi a4T 2007

Hello my Audi A4 check engine light turned on after I put cheap gas in
Was running fine before that. Put USA gasoline 91 octane… It has 123,000 miles but everything in the car has been replaced in the past year… Including timing belt and water pump which was done last August… I am new to owning an Audi and am very concerned what could it be?
Old 04-13-2016, 11:56 AM
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Originally Posted by destineeM4
Hello my Audi A4 check engine light turned on after I put cheap gas in
Was running fine before that. Put USA gasoline 91 octane… It has 123,000 miles but everything in the car has been replaced in the past year… Including timing belt and water pump which was done last August… I am new to owning an Audi and am very concerned what could it be?


Also the check engine light is not flashing… It is just live in a yellow… Also I put octane booster in my tank… The light has been on for three days now and I still have 255 miles until the gas runs out
Old 04-13-2016, 01:18 PM
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Gas won't cause a check engine light. VCDS codes?
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