check engine light was flashing, traction control light kept coming on, it was running rough and had hard shifts. one of the codes said "misfire cylinder 1" and so I pulled the plug and found it all fouled up with baked on oil. I replaced the plug and now all is well. that's right, I fixed the traction control and trans shifts by changing a spark plug. I'm starting to think that the warning was a fake to scare owners into paying attention to the check engine light. I cannot figure out how all these things can be connected. any ideas?