I just bought a 25 explorer st. Drove it one day and the service engine might came on. The app says it is a powertrain malfunction/Reduced power.engine light goes on and off. Took it to the dealer and they scanned it and said there was no stored codes. The next day back from the dealer light come on again !!! The car does not ever have 800 miles on it and the light has come on and off 6 times. Ford do better!!