As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE TAXIING AIRCRAFT, FLIGHT CREW INCREASE ENGINE POWER. ONE THRUST REVERSER LIGHT STAYS ON. AFTER TROUBLESHOOTING, MAINTENANCE REPLACED HYDRAULIC CONTROL UNIT. THE PRESSURE SWITCH INSIDE THE HCU GIVES A FALSE INDICATION. AIRCRAFT RETURN TO SERVICE.