As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPOILERS UPON GEAR EXTENSION, SPOILER PRESSURE REMAINED ZERO. DISCONTINUED APPROACH AND BEGAN ABNORMAL PROCEDURE WITH GEAR EXTENSION, SPOILER PRESSURE ROSE TO 3500 PSI AND BEGAN VERY SLOW BLEED OFF. ASSUMING UNRELIABLE PRESSURE LANDED WITH FLAPS 30. REMOVED AND REPLACED PRESSURE TRANSMITTER AND TOGGLE SWITCH.