As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 1522, SFO-CLT: AFTER TAKEOFF, POWER ON NUMBER 1 ENGINE ROLLED BACK. NO SHUTDOWN OCCURRED. FLIGHT RETURNED TO SFO. MAINTENANCE REPLACED THE NUMBER ONE ENGINE HMU AND FUEL PUMP - NO HELP. FOUND THE NUMBER ONE ENGINE PS3 SENSE LINE DAMAGED. REPLACED THE PS3 LINE TO THE NUMBER ONE ENGINE.