As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO DFW: DURING CLIMB AIR ENGINE 1 BLEED ABNORMAL PRRESSURE ECAM MESSAGE. FLIGHT CREW ACCOMPISHED QRH BUT RESET WAS UNSUCESSFUL. THE AIRCRAFT LANDED SAFELY AT DFW WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE #1 ENGINE PRESSURE REGULATING VALVE TOP SENSE LINE LOOSE AND TIGHTENED IT PER AMM 36-11-52.