Chrissy D

Hi all, New to the club, but have wanted an F pace for a long time , albeit it I'm repairing a damaged car! 😕, I have 2 fault codes , P0715 input/turbine speed sensor and P2617 crankshaft position signal output circuit/open, Questions are, are they expensive, and would I be able to change them myself?, Any advice would be greatly appreciated 😊👍