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Discussion Starter · #1 ·
So Ive been running flex fuel for almost a year and got the COBB2 code after pumping some 93. And after burning all that gas and adding some e85 I get the code but seems to come on after getting to normal temps. Ive checked all the connections for damage and Cobb's direction for trouble shooting. Could the O2 sensor be the culprit?
 
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