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997.1tt tiptronic shuts down 10 seconds after startup

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Hello renntech-community,


my 2007 997.1tt has developed a really odd problem. Has anyone experienced the same?


Approximately 10 seconds after startup the car dies. You can restart but the car will do the same again. If I want to keep it running I have to disconnect the battery and connect the power cables of the car to do a reset. After reconnecting the battery the car will start and stay on. Here is a little video of the car shutting off.



The car is stock and has 156 000 km - roughly 98 000 miles. I replaced the MAFs with new Bosch mass airflow sensors because the fuel trim in Durametric did not look right and one of the MAFs was reading 1.2V with the ignition on which is above the limit of 1.1V - but still no luck the error keeps coming back. Weird thing is when I check the DME with Durametric there are no fault codes. I also checked the engine ground cable and put in a new battery.


If anyone has an idea what this could be I would be very happy.




Edited by hans.brodi

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