BMW X1 2016 problems with the engine, engine indicator light keeps coming on

Hey, I had a similar problem with my 2018 BMW X3 last year. The symptoms were almost identical: black smoke when accelerating, check engine light and loss of power. At the garage, they found out that one of the lambda sensors was defective. This sensor is an important part of the exhaust system and plays a major role in controlling the fuel-air mixture. If it is not working properly, it can lead to serious problems, such as increased exhaust emissions and higher fuel consumption. In my case, the sensor had to be replaced and then the system was recalibrated. So yes, it was a serious problem, but after the replacement, everything ran smoothly again. I hope this helps you! Greetings

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Hey, thanks for your answer! Do you remember how much it cost to replace the lambda sensor? And were there any other problems afterwards or did your BMW X3 run perfectly again? Many thanks for your help! Greetings

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Hey, sure, I can tell you exactly. Replacing the defective lambda sensor, including troubleshooting and calibration, cost me a total of €375. Since I've been to the workshop, the "malfunction of the exhaust aftertreatment" problem has been completely resolved. My BMW X3 has been running perfectly again since then without any problems. I hope this helps you! Greetings

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Hey, thanks for the info! I think I'll probably make an appointment with my garage then. After reading this, I'm sure it's probably the lambda sensor in my case too. Let's see what the mechanic says. I'll keep you posted on how it goes. Hopefully the price will stay within reasonable limits. Greetings

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What can the error code mean with the catalytic converter conversion?

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The error code related to the catalytic converter usually indicates that the converter is not working as efficiently as it should. This could be due to a number of reasons such as a damaged or worn out converter, a malfunctioning oxygen sensor, or even a fuel mixture that's too rich or lean. I would recommend starting with a check of the oxygen sensors as they are easier and cheaper to replace. If the problem persists, you might need to inspect the catalytic converter itself. Please keep us updated on your progress. Do you have any other questions?