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  1. Audi a3 p2108 fault code 
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    Hello everyone,

    So essentially my audi a3 2.0tdi bkd had the engine codes p2100 and p2102.

    This led to me changing the throttle body and cleaning the egr valve. I also changed the fuse and performed an ecu reset.

    After this had all been done, i took the car for a drive and noticed it was laggy and the car would fully turn off at points. Using my carista, i cleared any faults to which p2108 flagged up. Ive also noticed the radiator fan now keeps spinning at full speed.

    Does anyone know how to fix this fault or any thoughts/ideas on this?

    Thank you in advance
     
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  2. Re: Audi a3 p2108 fault code 
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    the reason your fan runs at high speed is because you have (certainly a wiring problem) This fan is fed via main engine control relay & your throttle body is inter connected to the fan your trouble codes telly you so When the wiring to throttle body is sorted it will stop your fan
     
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  3. Re: Audi a3 p2108 fault code 
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    Does the fan come on slowly up to full speed a few seconds after turning on the ignition but not starting the engine? I don't trust the result the code reader is giving, as far as I can see this ECU should not generate this code, it is generic and non VAG specific. It would be interesting to have a code read done with VCDS to see how it compares.

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