What does FF11 engine fault mean on 1992 jaguar xjs?

The FF11 engine fault code on a 1992 Jaguar XJS typically indicates an issue with the engine management system, often related to the fuel injection or ignition system. It may suggest problems such as misfires, sensor malfunctions, or issues with the air-fuel mixture. To diagnose and resolve the issue, it's advisable to check the vehicle's diagnostic codes using an OBD scanner and inspect relevant components like spark plugs, fuel injectors, and sensors.