[ferbmw]

No errors. Just turns off if you move car immediately after starting. If you wait 2-3 seconds after starting, then goes normally.

had the same issue with a f30 with  enginee b40b20 some time ago. Solved clearing fault codes with ista even not having any errors.

If you do not have error, in ista "clear error" button is greay and you cannot erase.

since the car is in open loop during 3 to 10 seconds ( depending ambient temperatrure ) what you probably have is a wrong adapadtive value. You have to find the way to clear fault codes. Inside ECU. Go to DME, call up ECU functions and look for clear fault codes. IF ytou cannot do that, try reset adaptation  values under service functions.