As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WOW CAUTION LIGHT ILLUMINATED UPON LDG EXTENSION CYCLED GEAR AND LIGHT WENT OUT, NO PROBLEMS ON LANDING. INSPECTED AND CLEANED ALL LANDING GEAR WOW SENSORS. PERFORMED PSEU MEMORY TEST, NO FAULTS CODES FOUND. PERFORMED SATISFACTORY EVALUATION FLIGHT. PROBLEM RETURNED LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. MAINTENANCE REPLACED THE PSEU, EVAL FLIGHT WAS UNSATISFACTORY. MAINTENANCE THEN REPLACED THE LANDING GEAR SELECTOR VALVE. OPERATIONAL CHECK WAS GOOD.