As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PERFORMED BITE CHECK PER T/C 78273000 #1 ENG FOUND FAULT MSG #73-20321THE HMU FMV CONTROL CURRENT IS OUT OF RANGE. ESN862376. GROUNDED - YES. CORRECTION TO ESN, #1 ENGINE IS 862374. FAULT MSG 73-20321 SINGLE OCCURRENCE ON FLT LEG 8. ACCOMPLISHED B737-900 FIM 73-25 TASK 801 INITIAL AND REPAIR CONFIRMATION TEST, GROUND EEC TEST PASS. THIS CLEARS PLT SEAMC ANDY NOTIFIED.