As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, CREW REPORTED AN ECAM CLASS 1 FAULT, AUTO FLT RUD TRV LIM SYS. CREW COMPLIED WITH ECAM INSTRUCTIONS. FAULT REMAINED. FLIGHT RETURNED TO FIELD AT PHX AND LANDED WITHOUT INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE REPLACED RTLU 4CC - REFERENCE AMM 27-23-51-400 AND OPS TEST GOOD - REFERENCE AMM 22-61-00-710-001A.