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2010 2011 BMW 5 Series Forum F10 Error 118001 Mixture too lean F10 N20 |
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02-24-2024, 03:28 AM | #1 |
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Hi all, i am getting really fed up with this car.
Been chasing this for so so long. Mods list as of now 1) Stage 1 hybrid turbo 2) Bar plate IC 3) FTP charge pipe, turbo inlet, boost pipe Been getting error code #118001 Mixture control : Mixture too lean Replaced new coils, plugs,, hpfp and 4 new injectors recently Symptoms : 1) When I restart the car after leaving it park for while (i.e. 2, 3 hours), the car starts fine, then it will shake, rpm dropping to 500rpm as if its dying then it will rev itselfs to about 2k rpm before it settles down. Fuel comsumption was bad too as the car reads itself running lean therefore dumping more fuel. Driving wise seems ok... Car was tuned previously, reflash back to stock and stock downpipe went back in. Smoke test done, no leak detected. MAF sensor, 02 sensor can be ruled out? Otherwise I will get related code. Any ideas? |
02-25-2024, 04:12 AM | #3 | |
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Still that mixture control too lean code came on. For the past 100km (10% city, 90% highway), im getting only 22.2 mpg which is bad but is to be expected as the car reads itself running lean and dumping fuel to compensate |
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02-25-2024, 04:26 AM | #4 |
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Drives: 2016 F10 BMW 535i M Sport
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Do you have an OBD Scan tool? You will need to measure the adjustments to your fuel trims as they need to be within a certain range. Has your LPFP ever been replaced? Are you putting good fuel and also keep in mind that it could be possibly a dirty Fuel Filter, you can also try a nice Fuel system cleaner for starters.
Last edited by ChiltiCoatl89; 02-25-2024 at 04:36 AM.. |
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ooihe923.00 |
02-25-2024, 04:50 AM | #5 | |
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Interesting point tho, I havent replaced my LPFP but I'm not getting lpfp related error on bimmerlink only that mixture too lean error |
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ChiltiCoatl891935.50 |
02-25-2024, 05:20 AM | #6 |
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Referenced from X3 Group
If your LTFT increases as the rpms increase, you have a fuel starvation issue If your LTFT decreases as the rpms increase, you have a vacuum leak |
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