Moin together, With our CLK280 from BJ 06 and 70,000km (!!) there has been a mistake for several months on which the MKL burns. Sometimes the error goes away during the journey times he comes back after a few days and then stops for weeks. That’s why there was no TÜV. “Gemisch Bank 1 too fat”. The TÜV examiner certainly said an injection nozzle defective. I can’t imagine that at best because the car runs without any problem and runs silkenw eich. Auto is most sensitive to MB checkheftgepflegt and has been in our possession for 7 years. Since we did not get a TÜV we drove to MB for repair but they said everything ok and then did the inspection. Without defects. Have read out the error memory with the Torque Pro app and get that.. Can hardly explain why now also Bank 2 is affected at once. Each bank has a precat and a Nachkat probe. It can hardly be both defective. guess the error somewhere else. What do you think? Engine is the 3.0 liter V6. Thank you