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Error Code 63 - FXHO 2007
While towing a wakeboard in shallow water the engine alarm went off - power was limited and the iddle was spinning at around 4K RPM.

Took the ski to a mechanic - error code 63 - he exchanged the TPS sensor, but the problem persists.

It iddles at various speeds on its own and then the engine warning will come on.

I then took it to the local Yamaha dealership - they are telling me that I need to exchange the entire Throttle Body Assembly for a final price of around $3K.

There is nothing visually wrong with the assembly.

Can anyone help pinpoint some other options or possible causes / solutions other than spending the $3K?

Thank you for all the help!
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