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P0642

Danboii
in Audi A3 (8P) Forum

Featured Replies

Iv got the code p0642 sensor A reference voltage circuit low and one know what this is and what I can do 

  • Author

Just says reference A 

  • Author

Had a look earlier and there a broken plug to the oil level thing and my break sensors wires are completely snapped but I don’t think these would put the car in limp mode or am I wrong 

Definitely don't think the brake pad sensors would put it in limp mode. But not sure about the oil level situation. Is that down to a sensor I wonder? If so then hypothetically it could be this. 

  • Author

It says a bad sensor or a broken cable 

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