As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#388, LAX-BOS. (AIRCRAFT PERFORMED AN AIR TURN ABCK TO LAX) ' ENG 1 EPR MODE FAULT N1 DEGRADED MODE; REF TSM 73-22-00-810-817-B. PERFORMED SCHEDULED MX REPORT. FADEC 1B FAULT T2NA1. CHK WIRING FROM EEC (4000KS) J10 TO P2T2 SENSOR (4014KS). PINS J10/GBC TO PINS A/9,8,7. NO DAMAGE OR BREAKS RESISTANCE TO SENSOR WAS 542 OHMS. R & R 4014KS AS PER 73-22-11. PRECAUTIONARY OK FOR SERVICE.'