I'm not an expert on those codes, but I do know that any more than 70k miles on an n54 water pump and you are on borrowed time. I would do the water pump and t-stat as preventive maintenance now and hopefully not be stranded on the side of the road next week.
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2001 e36/7 M Roadster 5spd
2008 e90 335i 6spd
2011 e90 335xi 6spd
2011 e70 x5 diesel
2010 Ducati Monster 696
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