As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, RETURNED TO JFK DUE TO A FORWARD CARGO DOOR WARNING LIGHT. SUPPLEMENTAL DATA UPDATE: SENSORS S214 AND S215 WERE DIRTY AND OUT OF ADJUSTMENT. CLEANED AND ADJUSTED SENSORS AND REPLACED PSEU DRIVER CARD (A3). ALL INDICATIONS NORMAL AFTER BITE CHECK.