As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING BURNOUT PROCEDURE AFTER ENGINE CHANGE NO BLEED AIR INDICATION WHEN BLEED SELECTED ON. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE BLEED AIR REGULATOR PER B737-800 AMM 36-11-03-000-801 AND 36-11-03-400-801 ACCOMPLISHED INSTALLATION TEST PER THE SAME FOUND PNEUMATIC PRESSURE TO BE NORMAL DURING ENGINE RUN.