Question

have error code p0442 on my jaguar x-type 2003 model, what is it and repair?

Answer 1

This code indicates a leak in the evap system for the fuel tank. It is possible something as simple as a loose fuel cap caused the problem. If you have the code cleared and it returns then a smoke machine is needed to determine where the leak is. There is no way to tell you what part actually needs replacement until the test is done.