As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSH BACK & ENG START WHEN BRAKES WERE RELEASED ANTISKID OFF EICAS & DISCRETE LIGHT CAME ON, AND PARKING BRAKE DISCRETE LIGHT STAYED ON AC RETURNED TO THE GATE AND MAINTENANCE GROUNDED THE AC. OPERATED PARKING BRAKE VALVE NUMEROUS TIMES. PERFORMED BITE TEST AND RESET OF ANTI-SKID VALVE. SYSTEM CHECKS GOOD AS PER AMM 32-44-11.RETURNED AC TO SERVICE