Quote Originally Posted by Bronco Boy View Post
Does it shift fine when cold? Then hard when warm? Mostly hard in the 1-2 shift? If so, these are the signs of a bad PC. A shift kit is a good "temporary" solution.

My P1811 set the CEL after about 10 minutes of driving, every time I drove.
It's only done it twice ever. In early September intermittently for about 3 hours. Then again on Saturday when I left a red light. It has never done it any other time. However, when we had the codes read at the mechanic today, and there was no code errors. However, he checked the old cleared codes (but we don't know from when) and there was an 1811 code in the old cleared codes. It has only happened twice ever.