As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING MAINT LIGHT ILLUMINATED. GROUNDED - YES. INTERROGATED SYSTEM HAD CODE 74-42515 AND 74-42565 DISPLAYED. ACCOMPLISHED B737-9 FIM TASK G741-00-00-810-830. ASSOCIATED FAULTS RESET, NORMAL INDICATION, MAINT LIGHT EXTINGUISHED.