Paulag

Hi ive had the same problem. Replaced the sensor then had to replace the abs module. Got it repaired and replaced today. The ABS codes cleared but the brake servo restricted came back. Went and bought new pressure sensor and the brake servo restricted is still on the dash and the brakes are also faulty. Unsure what to do. The 1st pressure sensor worked but then I had to replace the ABS MODULE and once replaced the servo fault came back. Both pressure sensors I bought are zmetzger 5Q0906207B cost £62 each. Bought both from a local supplier. Ive been told that audi have done away with the B codes at the end and to get an original but im unsure as ive read loads have also used the B code ones fine. Any help would be much appreciated