As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STALL DISPLAYED ON UPPER ECAM SCREEN (ENG 2). LOUD BANG W-ENG 2 STALL ECAM LVLG AT 5000' IN MODERATE TURBULANCE. THRUST WAS DOWN UP DOWN DURING LEVEL. ACCOMPLISHED TROUBLESHOOTING IAW TSM, ALL CHECKS GOOD. ON POWER ASSURANCE RUN HAD NO STALL, AFTER RUN PFR SHOWED MESSAGE VSV MECHICAL BLEED VALVE-LPC2.