Hi All,
I had the dreaded "check VSC" message together with the traction control and engine light come on today on my 55 plate is250. The AA hooked up their diagnostics machine and it came back with P0031- Oxygen sensor(bank 1, sensor 1) and P0138 (bank 1, sensor 2).
Can someone tell me if it's common for both sensors to go or is it likely one is triggering the other? i.e. if I fix P0031, this will resolve both?
Can someone also tell me if these two sensors are the same part and fitted pre-cat? There is a huge difference in the cost of a pre cat sensor compared to post cat...
Finally, can anyone recommend where to order these from and even get this fitted in the London area?
Thanks in advance for any help you can provide.