Giulietta QV Knock sensor question

[ae]

Hi,
I recently took ownership of a 2011 Giulietta QV with the 1.7 turbo engine. Could anyone confirm for me whether this engine has one or two knock sensors? From the Giulietta workshop manual (in Dutch) I believe it is just one knock sensor. But the 4c uses the same / similar engine, and I believe, has two knock sensors.
I currently have a p0325 code that persists after replacing the knock sensor. So I am currently in the process of troubleshooting. Just wanted to rule out the possibility that the car has a second knock sensor that might need replacing.
Cheers,
AE