Hi Everyone, I am having a problem with my 2003 Honda Accord LX w/ AT. The current ptoblem is that Code P0685 is coming up, and the transmission is acting strange (slipping, etc.). My mechanic feels he cannot clearly state one way of the other the AT needs to be fixed b/c he cannot resolve the P0685 code. Recent history with the car is no major problems until Nov. 2010 (over 150K miles). Then the timing Chain slips, and the engine is shot. New (used) engine is installed, Check engine light comes on a day later. Numerous codes (including P0685), also code for the CAT and a fuel soleniod. I had that work done, and then P0685 code remained, and now the AT is acting up. Replaced the PCM (on advice), expecting the that to clear the code. The new PCM has not cleared the code, and the AT is still acting weird. Slips at times, works fine at other times. My mechanic has been chasing the code but cannot isolate it, and in turn, cannot be certain one way or the other about the AT. He has even reported that AT codes have come on, and then self-cleared, with the P0685 code remaining.He thinks it could be a solenoid from the AT feeding back to the computer, but he cannot confirm. Found this forum on a web search, and wanted to ask for ideas. Please help!