Recently my check engine light came on after I noticed that fuel tank wasnt filling up all the way. The tank will only allow me to fill up 3/4 of the tank. I've just taken it into an Autozone to get the codes check out and it came out: Explantion:" The powertrain control module uses the oxygen senor to calculate the air/fuel ratio of the engine. The computer has recongized a rich or lean condition on one engine bank only." I had no clue what that meant. If you have any information on this please respond.

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