As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT EMERGENCY DOOR EICAS MESSAGE AT FL 370 AT FL210. C/OUT PSEU BITE TEST IAW AMM 52-71-00-5. SENSOR 96 SHOWN. PSEU RESET AND TEST C/OUT AGAIN, OK. TARGET TEST SENSOR 96 NEAR-OK. DOOR PHYSICALLY CHECKED, CLOSED IAW MOC NO HISTORY ON FAULT.