As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE FROM YYZ TO JFK RECEIVED PAX DOOR WARNING, CARGO DOOR AND SERVICE DOOR CAUTION MSG'S, WITH NO LOSS OF CABIN PRESSURE. A/C DIVERTED TO SYR LANDED SAFELY. FOUND PAX DOOR WIRE HARNESS TO BE FAULTY. REPLACED PAX DOOR WIRE HARNESS.