Autobedrijf Wout Bouman - VW Polo met hardnekkige lambdasonde storing - Blog
I'm having a issue with the upstream (bank 1 sensor 1) O2 sensor. Replaced twice and cel keeps coming on with it. No apparent exhaust leaks : r/MechanicAdvice
Marsflex O2 Oxygen Sensor Upstream 234-5107 for Audi A3 TT, Volkswagen VW CC Eos Jetta Passat GTI, Ford F150 Expedition E150 E250, Porsche Lincoln : Amazon.ae: Automotive