The other day I had a friend hook up his scanner to my Jeep due to my check engine light coming on. The 2 codes that came up where P1494- leak detection pump pressure switch or mechanical fault and P0463- fuel level circuit A high level input. I'm not sure exactly what those two codes are suppose to mean, so if anyone has an idea, I would appreciate it if someone could give me some advice on to what is going on and how to correct it. Thanks.