As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CARGO DOOR FWD B LEVEL 2 ALERT INITIALLY INTERMITTENT IN CRUISE THEN CONSTANT. COMPLIED WITH AOM PROCEDURE AIR TURNBACK. REMOVED FWD CARGO DOOR COVER ADA7190-27 AND P1-1717 FOUND DISCONNECTED. RECONNECTED P1-1717 AND PERFORMED DOOR WARNING OPS TEST AND DOOR OPERATION. OPS OK REF AMM 52-31.