Code 34
 

turned ignition on today and servo motor starts up and dosent stop .Never done that before, also my 929 has full hindle exhaust so servo is connected but no cables attached. Got a code of 34 which in manual says "faulty EGCV and air intake valve servo motor potentio motor voltage " . I disconnect servo from wire harness and cleared codes but still "34" returns .. Would i need to replace servo for code to be cleared ?