Service bulletin - A judder from the torque converter lock-up clutch may be felt while driving between 20 and 60 mph. The problem is typically diagnosed as a bad torque converter. American Honda investigated the judder and found that the torque
converter was not causing the judder and the transmission is not damaged by this judder.
The judder was caused by deteriorated transmission fluid. The transmission fluid deteriorates quicker than expected
when it is exposed to intermittent high heat loads under specific driving conditions. A software update is available to
maintain the transmission fluid temperature within the desirable range under all driving conditions and eliminate the
potential for this judder.
