What was found
MAINT OVERHEAD LGT CAME ON JUST AFTER LANDING. GROUNDED - YES. REMOVED AND REPLACED #2 ENG ODMS SENSOR, REF B737-9 AMM 79-21-12. RESET #2 ENG ODMS CHIP COUNT, TEST 26 REF AMM 71-00-00. DMS CHIP COUNT DISPLAYS 0.0 ON EPCS PAGE. EEC TEST GOOD.