A8 Diesel Power Loss: Bad Fuel Filter Heater Alert
My 2012 A8 diesel is showing signs of fuel system issues. Engine response is sluggish with noticeably reduced power and a rough idle. The fuel efficiency has dropped significantly. The error memory shows a fault and I suspect the fuel filter heater might be the culprit. Has anyone dealt with similar symptoms and had them fixed? Particularly interested in how the diagnosis was confirmed and what repairs were needed. Just trying to get a sense of what to expect before heading to the shop.
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