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I have a 2020 STI I bought in West Virginia driving back to Nashville. Refueled in Lexington then 12 miles down the road the CEL came on steady and the cruise light flashing along with the SI light flashing. The code came back upstream O2 error too rich.
Has anyone had this issue tried the fuel cap and reset to code 2 times and still comes on within 40 miles. New car 1k on odometer now - please help if you know anything
 
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