As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING THROUGH FL330 DOOR PAX FWD OPEN ON EICAS, WENT AWAY DURING DESCENT THROUGH FL240, REAPPEARED AT FL230 AND WENT AWAY AGAIN AT FL210. THROUGHOUT PRESSURIZATION REMAINED CONSTANT. ADJUSTED L1 DOOR SENSOR IAW EMB 170 MM 52-72-20. OPS CHECK GOOD.