Hey guys I have a 2006 a4 and today the car went into limp mode while I was driving the ecs light went on and when I scanned it I got the code P2138. This is for throttel/pedal position sensor voltage correlation. I have gotten this about 3 or 4 times in the last year but when I would erase the code it went away but now it won't. I am going to take it in but would appreciate if anyone has any knowledge on this or has experienced the same thing and has any information. Thanks guys

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