my 406 HPi failed the MOT on Emissions.
I have a long saga with engine issues, found out to be Fuel Pressure Regulator (also changed the EGR Valve)

I have been getting an error code and Anti-Pollution Fault?
P0132 02 Sensor Circuit High Voltage (Bank I Sensor 1)

I have been told it is possibly a faulty sensor, or do I need to look elsewhere

Car runs perfectly, so a little unsure where to start
