Hello together, after having invested 3 days and a total of 300€ I think the forum here is my last option before I have to consider a workshop. Let’s get to the actual topic. I bought a C4 Grand Picasso year 04.2008 a week ago. The vehicle ran 225,000 km, ran or ran until three days ago without any problems. Last Wednesday I am to work in the morning. My work journey amounts to about 30 minutes. About 2 km before me in the workstation I drove to a traffic light that just became green and suddenly there was a strong ruckler whereupon the vehicle began to stutter and hardly or no gas at all.The following errors were shown to me: – Motor control light – System ESP/ASR defective – Service – Error code E8 P1336 – Manufacturer Specific – Energy saving mode After I had restarted the vehicle at the traffic light it ran again for 500m until the same messages started from the front Here, too, I had to reboot the vehicle so that I could at least make it to the yard of my job. I then arrived there via Google immediately inquired what the causes of such errors could be. Possible causes according to Google: – crankshaft sensor – camshaft sensor – battery – spark plugs – ignition coil (Zündbank) Now I went here and have exchanged all these things, read out, deleted errors and started vehicle. Now I will have to the following errors appear in this order: – Exhaust gas cleaning / Exhaust gas system defective – ESP / ASR defective – Electronic parking brake without function (and besides of course still a flashing engine control light) Well, so I went and bought both Lambda probes. The one for BEFORE the cat and the one for the cat. I then installed and tested the Lambda probe for BEFORE the cat today. Then I went back here and deleted the error and the vehicle g If I go down from the gas, it doesn’t take 30 seconds until all the error messages are repeated. Zzgl I would like to mention that as soon as the faults occurred, the vehicle started with engine rucksing as if it only runs on 3 cylinders. I now plan to install the Lambda probe for AFTER the cat and clean the throttle. I just hit my limits a little bit and stand there. Very shortly before putting the vehicle in a workshop. That’s why I’m going to turn to you to maybe get some tips from you where the mistake is. I’ve also attached some pictures of the mistakes. I’m very grateful about every help.