BMW X6 NOx Sensor Repair: Owner Seeks Expert Guidance

Had a similar situation with my 2013 BMW X5 35i last year. The NOx sensor started acting up, triggering the check engine light. Initially thought it was just a loose connection, but the diagnostic revealed a failed sensor. The repair wasn't super complicated, took about two hours at the shop. They had to replace both the sensor and clean the connection points since there was some corrosion build-up. The exhaust leaks you're mentioning were present in my case too, and they're often connected to the sensor issue. It's not the most serious repair job for these BMWs, but it's definitely not something you want to ignore. Left untreated, it can affect your engine performance and potentially cause more expensive problems down the line. My advice? Get it checked at a certified BMW shop. These sensors are pretty specific to the model, and you'll want someone who knows what they're doing. Make sure they check the wiring harness too, sometimes that's the real culprit, not the sensor itself.

Hey there! Thanks for sharing your experience. I actually went through something very similar with my X6 recently. I'm curious, do you remember roughly how much you ended up paying for the whole repair? And has everything been running smoothly since, or have you noticed any other issues pop up? Just trying to get an idea of what I might be looking at cost-wise and if I should expect any other related problems.

Hey again! Actually, I've got good news to share about my X5's repair. The issue turned out to be simpler than expected, it was just a faulty cable connection to the NOx sensor that needed fixing. Only cost me 95€, which was a huge relief since I was worried it might be something more serious! Everything's been running perfectly since the repair. No more check engine lights, no exhaust issues, and the emissions are spot on. I got lucky that it wasn't the sensor itself that needed replacing, as that would've been quite a bit more expensive. Honestly, I'd definitely suggest getting yours checked out properly. Sometimes what seems like a big problem can turn out to be a relatively simple fix, just like in my case. The key is finding a trustworthy mechanic who'll diagnose it correctly rather than just throwing parts at the problem. If you're still looking for a good shop, let me know. I've learned quite a bit about what to look for in a BMW specialist through this whole experience!

Thanks for that detailed update! Actually got my X6 sorted last week. Found a really good BMW specialist through a. Turned out I needed both the sensor and some wiring work done, bit more complex than your case. Cost me around 400 bucks total, but honestly, it was worth every penny. The mechanic was super transparent, showed me exactly what was wrong, and even gave me some tips for preventive maintenance. Car's running like a dream now, no more check engine light, passed emissions with flying colors, and that annoying exhaust smell is completely gone. What really made the difference was finding someone who actually knew what they were doing with BMWs. My old mechanic would've probably just replaced parts out of nowhere until something worked. Really glad I asked for advice here, saved me from making another expensive mistake!

SCR system warning and shutdown scenario: warning level 1

(Translated from German)

For an SCR (Selective Catalytic Reduction) system warning at level 1, start by checking the DEF (Diesel Exhaust Fluid) level, as low fluid can trigger warnings. Ensure the DEF is fresh and not expired. If the fluid level is adequate, inspect the DEF injector and lines for any blockages or leaks. It's crucial to address SCR issues promptly to avoid further complications. If the warning persists, consider having a professional diagnose the system to prevent potential shutdowns. Let me know how it goes or if you have more questions!