U029D:00:AF Lost connection with Nox Sensor A

[yam600]

HI,

Just done a DPF reset via Lunch DTC scanner, Van is 4 years old with 16,000 miles, short usage. DPF reset went from 100% down to nothing clearing soot. Wanted to first check the fuse, but have no idea which one services the NOx sensor. Just need to know which box and Number, Amp as so bloody many.

My next move was to clean the sensor with injector fluid, leaving it soaking. Or chuck DPF foam in via temp sensor?

I doubt it packed in with such low mileage but open to suggestions, as they are 350-400 quid.

The picture shows the sensor which I think it is, just below Temp sensor, 22mm spanner fit.