As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE RECORDED FAULT CODE 73-31372, UPPER EGT SECTORS READING HIGH ECONOMIC FAULT. ACFT GROUNDED. RAN SYS TEST IAW MM 73-21-00-740-801. NO SYSTEM FAULT DETECTED FOR THE LAST 10 FLIGHTS. SUSPECT TO BE AND INTERMITTENT FAULT. SYSTEM OP CHECKS GOOD.