As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT THERE WAS AN APPRECIABLE CHANGE IN THE SOUND OF THE SLIPSTREAM, FOLLOWED BY A PASSENGER DOOR OUTER HANDLE CAUTION MESSAGE. RETURNED TO SLC. FOUND PS2MB DOOR HANDLE PROXIMITY SWITCH HITTING THE HANDLE. ADJUSTED PER MM 52-70-04. DOOR OPS CHECK GOOD.