X5 35 d throwing new codes

[1mGator]

Hi everyone. Have a 2011 x5 35d with 169,000 mile s and thanks to this forum have been able to solve a ton of issues. Recently had dpf and egr issues and addressed both to success! Now a new monster has reared its head and I can’t find any info. Engine went into limp mode today (engine operating at reduced power) and just happened to have my Carley with me .... codes new to me;

04F6F - high torsional vibrations/error hydra;ic pump

004BD9 - injector cylinder 6 control

Any idea or direction would be great;y appreciated😀