X5 2005 3.0 Service Engine p0117, p1515, p0197.. Pls Help!

[lahermano]

Hi All,

I had suddenly had a loss of coolant with the leak in the expansion tank. I was in the middle of the highway and the temp guage went to RED zone and i was halting and driving to reach home.

So replaced the new Expansion tank and replaced the coolant.

Now there is no loss of coolant. But the engine is overheating in driving like less than 30 mins and getting these Error codes with service engine signal

p0117, p1515, p0197

I hope i didn't blow the head. while driving there is no loss of power or anything.

Please help what might be wrong and how to diagnose

Thanks for all experiences.