P0172 Diagnostic Trouble Code Discussion for November 2020
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2015 BMW 750i xDrive 4.4L Excessive Emissions VIN: WBAYF8C54F P0172: system rich B1. ... 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 and ecms would quickly lower desi... |
November 23, 2020 | |
| 2015 BMW 750i xDrive 4.4L Excessive Emissions VIN: WBAYF8C54F P0172: system rich B1. ... 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 and ecms would quickly lower desi... |
November 24, 2020 |
