Hi I recently noticed that my car appeared to be reving higher than usual sitting while idling my first assumption was a sticky throttle cable as I noticed that if i lifted the accelerator pedal up it went back to its usual rpm however after having a look I'm under the impression that it is electronic rather than cable as there is a plug on the pedal. Has anyone else had the same issue and does anybody know if it would be as simple as changing the sensor that is attached to the pedal?

 

TIA 

Going to say it's probably not going to be that, but yes, probably a sensor somewhere. Better to give it a scan than start firing the parts cannon at it in my opinion.