As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN PRESS SHOT UP 6800 VVI AFTER LANDING. BLOWER AND EXTRACT ALSO FAULTED. REPLACED NR 1 & 2 CABIN PRESSURE CONTROLLERS REF AMM. SECOND MECHANIC VERIFIED CAPS REMOVED FROM CONTROLLER, ALSO REPLACED OUTFLOW VALVE. ACCOMPLISHED OPERATIONAL CHECK OF SYSTEM.