johnny69 Posted August 14, 2023 Report Share Posted August 14, 2023 Good morning I have fit a AudiTT plugin extreme to a 2003 Audi S3 1.8T. We have also fit a Lambda module with Can wideband. Have gone through the insulation process and have managed to get the car to start and run, but have found that the vehicle will not turn off when key is cycled off and removed from ignition. The only DTC code that I get is DTC 71 Aux 9/10 supply error, the throttle operates correctly though. have also disconnected throttle body, and find that the car still will not turn off. Seems to me like the main relay is possibly getting back feed, and keeping the engine on. Has anyone had similar issues with this plug in? I have seen a couple of other posts that have had similar issues with wire in G4X ecu's. Have refit the original ECU and engine turns off as it should. Thanks Quote Link to comment Share on other sites More sharing options...
johnny69 Posted August 15, 2023 Author Report Share Posted August 15, 2023 All sorted, unplugged purge solenoid and found now engine turns off. I assume this was back feeding and keeping the ECU on. Quote Link to comment Share on other sites More sharing options...
AudiB6 Posted September 3, 2023 Report Share Posted September 3, 2023 Hey do u happen to know why I can’t get my coils to test or injectors? Everything else works fine Quote Link to comment Share on other sites More sharing options...
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