Hi everyone,

just joined and hope you can help.

i got a Audi A8 2014 4.2TDI.

got fault code 9814-sensor 1 for exhaust bank 1 G235.

I went to TPS with this information and bought the sensor.i fitted it this weekend. i am not a mechanic by any means but as this one was on top of the engine i did it myself. cut a long story short, it was the wrong sensor.
I then rang Audi this morning and they said i need to bring the car in so they can find out which sensor it is manually by unscrewing them.
so i said,whats the point of having vagcom computer that tells you what sensor it is if you got to do it manually.
surely sensor 1 for exhaust bank 1 should tell you which sensor it is and where it is located.
i have done some research today and realize they there are quite a few exhaust temperature sensors on my car but each one has a different part number. i now know my car has 2 banks of exhaust sensor because its a V8 so that in itself eliminates half of them.
the bloke in parts said,if it is the one,he thinks it is,it will cost £2000 plus vat and £150 for sensor.

so can anybody help me to try and identify which sensor is sensor 1 for exhaust bank 1 please.

thanks.

Andy