The 02 sensor for my car went. Diagnostics show it was bank 1, sensor 1.
This was left for a while and in the end there were 5 or 6 fault codes all relating to this. Today I had said sensor changed, for a brand new one. And after a few miles, the light came back on, so my mate plugged the diagnostics again and it read bank 1, sensor 1, as before.
The light goes away when you stop and restart, but then again, comes up later. A 'pending fault code'. As said, this sensor has been replaced with a brand new one, so surely it cant be the sensors worn out.
Does anyone know if is anything that would upset the sensor, or another reason as to why it shows this fault even with a new sensor?
Any input would be great. Cheers