What does fail-safe engine mode mean on a jaguar XJ8?

Fail-safe engine mode on a Jaguar XJ8 is a safety feature that activates when the vehicle's engine management system detects a serious fault, such as a malfunction in the engine or transmission. In this mode, the engine's performance is limited to prevent further damage, allowing the driver to maintain some level of control and safely reach a service location. This typically results in reduced power and altered engine response, signaling the need for immediate professional diagnosis and repair.