As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2117. XBLD VALVE FAILED TO OPEN AFTER TAKEOFF. RENDERED PACK 1 OFF. DUE TO MEL AND FORCASTED ICE. DIVERTED AND ACCOMPLISHED A UNEVENTFUL LANDING. REMOVED FROM SERVICE. FOUND CANNON PLUG LOOSE ON XBLEED VALVE RESECURED CANNON PLUG. PERFORMED OPERATIONAL TEST OF APU-PNEUMATIC BLEED SYSTEM REF E175 AMM TASK 36-12-00-710-801-A CYCLED XBLEED MULTIPLE TIMES WITH NO ISSUES NOTED. A/C OK FOR CONTINUED SERVICE. NO PARTS REPLACED.