As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAINT CONT REQUEST REVIEW RECENT NR 1 ENGINE START VALVE ISSUES. REPLACE MW0312 ENGINE HARNESS. GROUNDED-YES. REMOVED AND REPLACED NR 1 ENGINE MW0312 HARNESS, PER B737-800 AMM 71-51-03-000-801-F00/AMM 71-51-03-400-801-F00 REFERENCE POWERPLANT TEST TABLE AMM 71-00-00-800-811-F00. PERFORMED EEC TEST, PER AMM 73-21-00-700-804-F00 AND TEST 12. ACTUATORS TEST, PER AMM 71-00-00-700-807-F00, ALL TESTS PASS. SEAMC SCOTT NOTIFIED.