As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VERIFICATION FLIGHT FOR APU COMPLETED UNSATISFACTORILY. THREE ATTEMPTS AT FL 400 FAILED 30% RPM MAX FOLLOWED BY APU FAULT EICAS. REMOVED AND REPLACED THE DE-OIL SOLENOID VALVE IAW AMM 49-27-08-404-010. APU OPS & LEAK CHECKED GOOD. NO FAULTS.