As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE FROM SFO, BOTH ENGINE EPR INDICATIONS WERE ABNORMAL BUT OTHER ENGINE INSTRUMENTS WERE WITHIN PARAMETERS. DURING CLIMB, STATUS MESSAGES APPEARED FOR BOTH ENGINE OIL COOLERS AND REVERSER CONTROL VALVES. THE FLIGHT RETURNED TO SFO AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE BUSS POWER CONTROL UNIT WITH A SERVICEABLE UNIT. SUBSEQUENT SYSTEM TESTS WERE SATISFACTORY. AIRCRAFT RETURNED TO SERVICE.