Hello my jeep got a message of service 4 wheel drive so i brought it to the dealership. the looked at it and it turns out to be a failing PTU. Jeep did a recall and extended warranty on it but they are saying they will not cover the cost of the repair because its the wrong code. I have code C14A797 and they are saying they need code P14A797. This doesnt even make sense its the same exact faulty part but different codes??? Codes they the car company creates?