steverob Posted December 7, 2010 Report Share Posted December 7, 2010 Hi All I went to start my Audi A8 1998 2.8 sport the other day and it was turning but not firing.. A friend came round and got the fault codes from the computer but we are struggling to know what to do with them i wonder if anyone here has had experience of these? Audi DTC:18033 DTC: P1625 Data-Bus Powertrain Unplausible Message from Transm.Contr. Audi DTC: 18157 DTC: P1749 Transm.Contr.Unit Incorrect Coded I would really appreciate any help anyone can give me on this cheers Steve Link to comment Share on other sites More sharing options...
ainarssems Posted December 8, 2010 Report Share Posted December 8, 2010 The fault codes mean there is no communication between ECu and TCU. They should not prevent engine from running. Check the electronics box fro water ingress Link to comment Share on other sites More sharing options...
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