2015 BMW 750i xDrive 4.4L Excessive Emissions
vehicle came in running very poorly with low power and misfiring. initially had many misfire and mixture codes plus boost pressure and rail pressure codes. went for the low rail pressure B1 first. could see the actual pressure never get close to desired an...
FIX posted 12/17/2020
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Vehicle Data2015 BMW 750i xDrive
Trouble Codes
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Vehicle Data
2015 BMW 750i xDrive
VIN | WBAYF8C54F |
Engine | 4.4 L / 8 cyl / GAS |
Trans | 8-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Excessive Emissions |
Occurs | Hot |
Trouble Codes
11800 | mixture control fuel-air mixure too rich |
11840 | mixture control fuel-air mixture too rich deviation large |
11850 | mixture control 2 fuel-air mixture too rich deviation large |
P0172 | Fuel System Too Rich (Bank 1) |