XJ8 'Restricted Performance' Issue, Urgent Help

After getting the car back from the body shop after a light frontal accident, we managed to get the engine started again. However it constantly displays "Restricted Performance" on the Message Screen. For several weeks the Mechanics did leave it out in the rain with the engine uncovered so water may have hit some sensors etc... Has anyone had this problem before? Is there anything I can do on my own? The car is a 1999 XJ8 L.

Take the car to a good Jaguar repair shop or a dealer to check the engine codes and the knock sensors.

Take the car to a good Jaguar repair shop or a dealer to check the engine codes and the knock sensors.
i wanted to know how do i reset this code or remove it? any ideas?

have you ha dthe problem corrected yet? What was the issue?

have you ha dthe problem corrected yet? What was the issue?