I have the same problem with my 2014 Journey. Just started out of blue with failure to accelerate. The lighting bolt ⚡ light came on . I looked online what it was and how to fix it. Was informed about the ETC and resetting the system with the gas pedal. Performed the process light went off and was driving fine. Then about 20 miles later the ⚡ light flashed and there was a temporary lag in acceleration speed and the traction control off light came on. Trying to figure out how/ what to do short of putting my car in shop. Oh and the battery light came on also. Makes me think of a short of some sort but could use some ideas. Thanks