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    Error code P220B Nox Sensor AUDI A7 2019 3.0 DIESEL

    Having issues with my AUDI A7 2O19 3.0 DIESEL. Fault code P220B; NOx sensor supply voltage circuit bank 1 sensor 2. I know these are a common fault after speaking with the very useful warranty company. Can anyone assist on where to find this sensor and any tips or tricks to try fix it before...
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