GOOD MORNING EVERYONE, ENGINE IN RECOVERY

ERROR IN ENGINE MANAGEMENT: 001CAF POTENTIOMETER FOR EXHAUST GAS RECIRCULATION.

ERROR ACTIVE THEREFORE NN CANCELLABLE. I SEE IN THE PARAMETERS THE EGR COMMAND FIXED AT 99% WITH THE IGNITION ON AND ALSO AT PROLONGED IDLE..THE VALUE DOES NOT CHANGE UNDER ANY CONDITION. I HAVE TRIED TO CONTROL IT FROM THE ACTIVATIONS BUT IT DOES NOT MOVE. (ALSO TRIED WITH A NEW VALVE).. has this happened to anyone?

THANKS IN ADVANCE!!!