So my 2007 Cummins has been acting up lately. I get a code p2121. I get weird throttle response and goofy shifting. The code reads accelerator pedal position sensor. Anyone had this issue? Tips or tricks? Things to look for or check? I can clear the code and it will be ok for a little while then act up again. I checked my grounds, cleaned them up. Replaced a worn battery cable end. Did an apps relearn. Cleared the code and it still comes back. Thanks in advance for any help.
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