2000 s4 no communication with ecu - AudiForums.com

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Old 05-21-2010, 12:30 PM
1st Gear
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Join Date: Mar 2010
Posts: 49
Default 2000 s4 no communication with ecu

i believe its because my radio aint working so i am guessing dats why i cant communicate with my ecu now my second question once my kit comes in for the radio is there anything else other then the radio that wont let me communicate with the ecu?
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Old 05-25-2010, 05:11 PM
1st Gear
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Join Date: Mar 2010
Posts: 49

bump guys i just pulled out the radio and still cant communicate with the car!!! THE ABS LIGHT SPC N CHECK ENGINE LIGHT IS ON HELP NO COMMUNICATING WITH ECU TO CHECK CODS!!!!!!!!!!!!!!!!
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Old 06-04-2010, 06:24 PM
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Join Date: Nov 2008
Location: depoe bay
Posts: 700

is your ecu bad? i know water can sometimes get in there an screw things up. poor drainage design. check your fuses?
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Old 06-04-2010, 08:56 PM
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Join Date: Apr 2010
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Default 2000 s4 no communication with ecu

I don't know if this will help but I have a 2000 A6 2.7T and on my car I could not communicate with the ecu either. I discovered it was a bad ABS module, if I unplugged it I could communicate with the ecu just fine.
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Old 06-05-2010, 05:47 PM
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Join Date: Jan 2010
Location: Denver
Posts: 772

Does anyone know if the immobilizer could cause the problem?
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