As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OVERHEAD MAINT LIGHT CAME ON AFTER LANDING AND REMAINS ON. GROUNDED - YES. STATUS MESSSAGE #2 2 CTRL DISPLAYED. FOUND MESSAGE FAN SPEED ( N1) SENSOR IS OUT OF RANGE. PERFORMED B737-9 IFIM TASK G 77-00-00-810-960 STATUS MESSAGE NO LONGER DISPLAYED. MAINTENANCE LIGHT IS OFF.