Automatic spin, Nubira 1.8 CDX

Hello guys, after I almost praised the Nubira about the green clover, my guarantee is just around, suddenly the automatic mutes. Can actually only be an electronic fart, as it only occurs sporadicly. I think if it were something mechanical, the problem would continue / worsen. So it started with that suddenly the gear was out, as if someone had put on N. At the same time the engine check light lit up. Stopped, everything switched on And then there was still peace and light again. Today, strong incline, position D with hold function one: flashing crossed square in the gear indicator, engine check lamp again on. Made out, key out (such a system restart often works wonders), everything again at the beginning. Engine check lamp is still on, gear indicator is again ok, transmission does not switch (feeled was only the third gear inside). Again, all plugs controlled and such a small hose (similar to a vacuum hose used to be attached to the ignition manifolds) with a clamp. Switched through in the stand: Very rough switching processes, sometimes flashing quadrilateral, sometimes ok.. Driven a bit, transmission behaves normally, but the engine check lamp does not go out. I am very grateful for your tips! Greetings from the Eifel!