I have an audi TT with fault code 16885 in the pcm, which the description is vehicle speed sensor implausible signal.

I have scoped the speed signal upto the instrument pack with the following wave form.




And this is the scope trace coming out of the instrument pack going to the pcm.



Is anyone able to verify if this is correct or not, I have sent the I/P off for repair & it has come back as good but im suspicious as every thing else tests ok.

Thanks
Nick