As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE BLEED OFF, 0 DUCT PRESSURE DURING TAXI. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE REMOVED AND REPLACED LEFT HPSOV IAW B767 AMM 36-11-07 . OPS AND BITE CHECK GOOD. ACCOMPLISHED BLEED SHIFT CHECK IAW B767 AMM 36-11-00, CHECKS GOOD 84%N2. AIRCRAFT RETURNED TO SERVICE.