2006 Audi A6 P0346 CEL code

[Vic]

Hi I have a 2006 Audi A6 3.2 Quattro which is throwing up a check engine light.
Checked the code and got P0346 - 006 - Implausible signal. 
838 - Camshaft Position Sensor (G163)

I'm hoping that I can fix the problem by simply replacing the camshaft position sensor on the left cylinder head - looks like a few minutes work.
Or is there more to it than that?

Thanks

Vic Norman