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    Q5 Audi Q5 2012 Adblue system fault

    Hi Gang My wife's Q5 has the amber engine light on twice. The fault is P20B800 Reductant Metering Unit Heater Control Circuit High. My local Audi specialist (not a main stealer) says options look like:- - New complete adblue tank , pump and heater c £2k plus fitting - Adblue system delete c£250...
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    Newbie

    Hi Gang We own a 2012 Q5 TDI ands a 2019 A4 40 TDI Quattro. I am hoping to add to the knowledge base as well as get help, especially on the Q5