Engine light came back on. It turns on like 2 sec after I start the car. I had resetted it last night, drove around, turned off the car a few times and restarted, and no engine light. Started again this morning, nothing wrong. Started it after work and the light is back on. I just filled up on octane 94 gas last night as well ( I don't know what the dealership was using before). Could this be a spark plug TSB problem? Any ideas?

 

hmm I think you might got the same problem that I had before......If I am not wrong, ask the dealership to check all your sensor.......especially O2 sensor......