As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WARNING LIGHT ON RIGHT FORWARD SERVICE DOOR AT 1000 FEET AFTER OAK TAKEOFF. DIVERTED TO SFO. MAINTENANCE ADJUSTED THE UPPER CAM. DOOR OPERATIONALLY CHECKED OKAY. DEPARTED SFO AND RETURNED TO SFO DUE TO SAME DOOR INDICATION. SUPPLEMENTAL DATA UPDATE DOOR OUT OF RIG. RE-RIGGED DOOR PER MM52-40-20 & 52-10-20. REPRESSURIZED CABIN AND NO HANDLE MOVEMENT OR DOOR WARNING LIGHT.