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I have a 2016 (X260 model) XF-S 3.0d and the Engine Management light keeps coming on. I have read the code which is P20EE and cleared it. The car will run for a few days before the Engine Management comes back on. Has anyone encountered the same problem or can through some light on the problem I would be very grateful. Thank you

Most likely either leaking exhaust or DPF fault according to Dr Google. Simplest and cheapest starting point is get garage to check for exhaust leaks I would say