As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FAULT LIGHT ILLUMINATED ON PRE FLIGHT. PERFORMED APU BITE CHECK FOUND FAULT CODE 49 94299 STARTER GENERATOR FILTER ELEMENT. REPLACED STARTER GENERATOR FILTER ELEMENT OPS AND LEAK GOOD PER AMM 49 91 12 000 803. RAN APU CURRENT STATUS NO FAILURE FOUND.