to a year old code. Try gettng it read again and see if there is another code. Also I had this issue before it would rev high sometimes when I was starting and when driving. I almost crashed a couple of times. Turns out when i stretched out trying to get comfortable I was sliding my floor mats forward. The top would push the throttle cable and that would rev the engine. I have also heard this same issue with this solution on Click and Clack.