Arnold Posted August 7, 2020 Report Posted August 7, 2020 I disconnected the battery + cable when i installed the amplifier. Code P21CA00 came on which I cannot delete. Can this code be removed with a carport or should I go to a repair shop? Quote
Arnold Posted August 7, 2020 Author Report Posted August 7, 2020 Car is A6 2,0TDI 2016. The code refers to the low voltage of the adblue pump. I have CarPort Pro-Module CAN. Quote
nelfurdui Posted March 19, 2021 Report Posted March 19, 2021 Have you resolved it? I got the same fault on an Audi A4 2.0 TDI 2016 Quote
Arnold Posted March 19, 2021 Author Report Posted March 19, 2021 Hi, the fault code went off on its own. The car's own self-diagnosis program removes it when it finds that everything is fine. Need to drive quite a lot, maybe about 1000km. Quote
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