As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO APU DUCT PRESSURE. IAW APU ECU BITE, FAULTING PT2 INLET PRESSURE SENSOR. RESET APU ECB. BITE TEST COMPLETED AND ALL PASSED. OPERATED APU BLEED VALVE SEVEARL TIMES. ALL OPS NORMAL. PRESSURE 32PSI. OPERATED PACKS. ALL INDICATIONS NORMAL. OK FOR FURTHER SERVICE