What does restricted performance mean on a 2004 jaguar s type?

Restricted performance on a 2004 Jaguar S-Type typically indicates that the vehicle's engine management system has detected a fault, causing it to enter a "limp mode." This mode limits the engine's power output to prevent damage and ensure safe operation. Common causes can include issues with the throttle control, transmission problems, or sensor malfunctions. It's advisable to have the vehicle diagnosed by a professional to identify and resolve the underlying issue.