As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE WORKING ASA W/O 1921020/DEFECT ASA LP 60094957: FOUND #2 ENG, HIGH STAGE VALVE LWR BODY DIAPHRAGM - SENSE LINE BROKEN @ VALVE 'B' NUT CONNECT POINT. (BROKEN TUBE). GROUNDED - YES. REPLACED HIGH STAGE VALVE LOWER SENSE LINE/TUBE REF. B737-900 AMM 36-11-06.