Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
That code is for the left bank converter which is the front bank. Based on the description of your problem it sounds like we have a vacuum leak which could be the cause of the cat failure. Start the engine cold and listen for any kind of hissing or air noises from the engine. Look under the engine cover to see if the PCV tube is split or leaking. Also sometimes the hose going to the brake booster leaks. I also see where the intake manifold and IMT valves seals leak. Let me know.