P0725 Engine Speed input Circuit Malfunction

What is your question?

check engine light came on and codes were showing P0725 and P0725 pd. have no clue what the pd means but thats what the code readers shows. ended up deleting the codes and driving at least 100 miles or more. not exactly sure on the milage from time i erased the codes but has been driven at least 50 or 60 miles at the very least. service engine light did not come back on but it makes a noise sounds like slapping metal to me but not 100%. could be a bad bushing or motor mount. will check tomarrow. also the idle will change quite frequently without touching the gas, not more than 200 rpms.