As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU PNEUMATIC FUNCTION ONLY PRODUCING 2 PSI AIR PRESS. WILL RISE AT ENG START SIGNAL. RECEIVED APU BITE P2 SENSOR FLAG 16. R & R VARIABLE VOLUME CHAMBER ON APU. R & R INLET TEMPERATURE SENSOR ON APU. R & R SOLENOID VLV ASSEMBLY ON APU. IAW AMM 49-53-07, 49-61-04 & 49-27-08. OPERATIONAL CHECK ON APU NORMAL IAW 49-11-00. R & R SOV. OPERATIONS CHECKED NORMAL AMM 36-11-10.