As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO EWR PILOTS REPORTED A NR 2 ENGINE EIU FAULT. ACFT RETURNED TO PHX WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE ENGINE INTERFACE UNIT IAW AMM 73-25-3-04 AND PERFORMED A POWER ASSURANCE TEST IAW AWA TASKCARD NR F5M71302. OPERATIONAL CHECK WAS GOOD. TEAR DOWN REPORT SHOWS THE EIU SN 4076 PASSING FUNCTIONAL TESTS AND ENVIRONMENTAL TESTS IAW CMM 73-25-35 REV. 4. MINOR DENTS WERE NOTED ON THE UNIT BUT ARE CONSIDERED COSMETIC IN NATURE. UNIT DID NOT NEED ANY CALIBRATION ADJUSTMENTS.