ATC and AFIS will usually declare at least a 'local standby' for any indication of a malfunction by a pilot. It's useful as well as being a 'just in case' for the aircraft, it allows the fire crew to check their response time (required by the CAA) as they may be on other duties like re-fuelling or baggage handling when the standby is called.
ATC/AFIS will ALWAYS err on the side of safety if a pilot reports a problem of any sort and you don't pay for it so don't be afraid to tell the controller/FISO if you have a 'problem', however trivial it might be.