As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1926, LGW-BOS. (ETOPS) SECOND TIME WRITE UP APU AUTO SHUTDOWN AFTER COMING ONLINE FOR 30 SECONDS ( APU SYSTEM A321NEO ETOPS ); REPLACED SCAVENGE & LUBE FILTER IAW AMM 49-91-41. OPS CHECK NORMAL. NO LEAK. PERFORMED MULTIPLE CYCLES OF APU, NO FAULTS NOTED.