Gentlemen,
I am writing to share my case with you because I suspect that a lot of people are still looking for a solution. I had the same problem. The anti pollution catalytic converter fault began to emerge. Replaced coil (ignition dropped) spark plugs, to no avail. The car drove after fixing the errors, sometimes a week, sometimes a month. I ignored one error that the computer detected (intake air sensor error), the foreman said that it would definitely not be a catalyst, a lambda probe. When I looked under the hood and located the sensor (it is right in front of the collector, visible to the naked eye, you don't even have to bend down), I was nervous on the one hand, and happy on the other. It turned out that the sensor did not stay well in place. He was loose if I don't say what. Apparently those plastic clips had broken off once and there was no holding. After repairing this sensor, as he took away with his hand. The car gained power, it does not jerk on a cold engine, it works on all cylinders (there is no catalytic fault). I have been driving for a long time, not sparing the car and there are no symptoms for the fault to return. I only have to replace the relay from the secondary air pump (car at low revs) but for this you need a car electrician (almost impossible to access the relay) the need to re-program it in the computer. Let me know if anyone else had such a case,
Greetings!
