If all of the other locks work the fuse is fine. Check for power at the doors lock actuator when pressing the button if the actuator has power and a ground the actuator failed.The plug is plugged in, the unlock/lock switch on that door works, it just doesn't lock or unlock that door. So there is power to it. I'm thinking whatever moves the door lock is broken. Probably a plastic part. I'm just curious if this is something that is easily repaired.