As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPAR VALVE LIGHT ILLUMINATED DURING CLIMB. TURNED OFF AFTER 30 MINUTES. GROUNDED - YES. REMOVED AND REPLACED #2 ENG SPAR VALVE ACTUATOR REF B737-9 AMM 28-22-11. PERFORMED ELECTRICAL CONTROL INDICATION TEST REF AMM 28-22-00-710-801 WITH NO DEFECTS NOTED. (REF TSR714447)