100% Free

No Scanner Needed

Carly logo
Prices

haraldblaze7

BMW 8 Series O2 Sensor Issues & High Fuel Consumption

Hey everyone! Having trouble with my 2019 BMW 8 lately. Engine light is on, fuel consumption has gone through the roof, and diagnostic shows some error codes. I suspect it might be the O2 sensor acting up. Has anyone dealt with similar symptoms on their BMW 8? Really interested to know what your mechanic diagnosed and how they fixed it. Any help would be great!

Summary of the thread

A 2019 BMW 8 Series owner is experiencing engine light activation and increased fuel consumption, suspecting an O2 sensor issue. Error codes P0172 and P0175 indicate a rich fuel mixture, which aligns with a similar problem another BMW owner faced, caused by a faulty O2 sensor connection. The suggested solution involves checking and possibly repairing the O2 sensor connection, cleaning the sensor, and inspecting the MAF sensor to ensure accurate diagnosis and resolution.

Did this summary help you solve your problem?

6 comment(s)

rolandflame67

Hi there! I've got some experience with BMWs, having owned a 2017 BMW 6 Series (and previously a 4 Series). Had a really similar issue with my 6er, engine light, crazy fuel consumption, the whole deal. Turned out it was indeed a faulty connection in one of the O2 sensor cables. Got it fixed at my regular workshop, cost me about 95 Euro. They found that the cable connection was loose and had some corrosion, which was messing with the sensor readings. Pretty straightforward fix, honestly. Before jumping to conclusions though, could you share which engine variant you have and what specific error codes you're getting? That would help me tell if it's the same issue I dealt with. Hope this helps! Let me know if you need more details.

haraldblaze7 (community.author)

Thanks for sharing your experience! Mine's a bit newer at 104185 KM and had its last service 3 months ago. Just got the error codes checked, it's showing P0172 and P0175, which point to a rich fuel mixture. Really sounds similar to what you experienced with your 6er. Did your mechanic mention anything about checking the MAF sensor as well? Just wondering since I've read these issues can sometimes be related. The fuel consumption part is what's really bugging me, gone up by almost 30% in the last few weeks. Thanks for the heads up about the repair costs too. Good to have a ballpark figure in mind before heading to the shop.

rolandflame67

Hey again! Yeah, those error codes, P0172 and P0175, they're exactly what I dealt with on my 6er. Funny you mention the MAF sensor because my mechanic actually did check that too during the diagnosis. In my case, it turned out to be just the O2 sensor issue, but it's smart to check both since they can give similar symptoms. I remember my fuel consumption shot up by about 25-30% too, super annoying when you're filling up way more often than usual. Honestly, the moment they fixed that loose connection on my O2 sensor, the fuel consumption went right back to normal. One thing I didn't mention before, my mechanic also cleaned the sensor while they were at it. Said it had quite a bit of carbon buildup, which probably didn't help matters. Since your car's got similar mileage to what mine had when this happened (mine was around 98000 km), might be worth asking them to clean it even if they just end up fixing the connection. Tell you what, keep me posted on what your mechanic finds. Really curious to know if it's the same exact issue. These BMWs can be pretty consistent with their quirks!

haraldblaze7 (community.author)

Thanks so much for all the detailed info! Really appreciate you taking the time to share your experience, especially about the sensor cleaning. I've actually just booked my car in for tomorrow morning, definitely going to mention both the O2 sensor connection and the cleaning to my mechanic. You're right about these BMWs and their quirks! It's honestly pretty reassuring to hear someone else had the exact same codes and symptoms. I was worried it might be something more serious (and expensive!). Will definitely get them to check both sensors while they're at it, rather be thorough than have to go back again. Thanks again for all your help! I'll try to remember to update this thread once I get it sorted, might help someone else with the same issue down the line. Really glad I asked here!

Bmwf11

BMW f11 550d xdrive error code 287500 Vehicle jerks extremely

(community_translated_from_language)

CarlyMechanic

community_quotation:

community_author_wrote_on

BMW f11 550d xdrive error code 287500 Vehicle jerks extremely

The error code 287500 on your BMW F11 550d xDrive typically relates to a fuel rail/system pressure issue. Start by checking the fuel pressure sensor and the fuel pump for any faults or irregularities. Ensure that there are no leaks or blockages in the fuel lines. Given the severity of the jerking, it's crucial to address this promptly as it can affect vehicle safety. If you're not comfortable performing these checks, I recommend having a professional mechanic inspect it. Let me know how it goes or if you have any further questions!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

BMW

community_crosslink_rmh_model

8