I looked at the previous posts to this error and it seems to indicate that this is an accumulator problem. I was going to have the accumulator replaced, but when this error occurs does not seem to point to the accumulator. I had it occur twice driving a 150mile trip about 1/2 into the trip at 70mph in 6th gear. I had it occur a 3rd time when I put it in reverse to back up. I am a bit baffled and would hate to replace the accumulator and not fix anything. Any advice would be appreciated. Thanks, RJ.

Had errors P0944 and P172E