As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON SINGLE ENGINE TAXI, THE NR 2 ENGINE COMPRESSOR STALLED WHEN POWER WAS INCREASED. THE ENGINE WAS SHUTDOWN, STARTED THE NR 1 ENGINE AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE PRBC VALVE. THE ENGINE WAS RUNUP AND TESTED OK. AIRCRAFT RETURNED TO SERVICE.