As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 SPAR VALVE CLOSED LIGHT ON BRIGHT BLUE. GROUNDED - YES. REF B737-9 WDM 28-21-11 & B737-9 AMM 20-60-01 INSPECTED C/B P6-3 B-4 THAT WAS FOUND "OUT" & RESET C/B. ACCOMPLISHED #1 ENG SPAR VALVE TEST REF A MM 28-22-00-710-801. OPS TEST OK. RAN #1 ENG PRECAUTIONARY NO DEFECTS NOTED.