BMW 330E 2017–2021 — technical service bulletin
Bulletin B121221 · NHTSA communication 10205615 · issued Nov 1, 2021
Technical service bulletin
communication type
Back Over Prevention
component
2017–2021
model years
34
vehicle entries
Official summary
???Due to an unfavorable operating point primarily in the low-end torque range, the fuel vapor scavenging that takes place in that range may result in incorrect detection of a mixture that is too rich. As a result, an incorrect mixture adaptation value is stored.
Vehicles covered
- 2021 BMW 330E
- 2019 BMW 330I
- 2020 BMW 330I
- 2021 BMW 330I
- 2018 BMW 530E
- 2019 BMW 530E
- 2020 BMW 530E
- 2021 BMW 530E
- 2017 BMW 530I
- 2018 BMW 530I
- 2019 BMW 530I
- 2020 BMW 530I
- 2021 BMW 530I
- 2018 BMW 540D
- 2019 BMW 540D
- 2020 BMW 540D
- 2017 BMW 540I
- 2018 BMW 540I
- 2019 BMW 540I
- 2020 BMW 540I
- 2021 BMW 540I
- 2018 BMW C 400 X
- 2017 BMW F800 R
- 2020 BMW M340I
- 2021 BMW M340I
- 2017 BMW M550I
- 2018 BMW M550I
- 2019 BMW M550I
- 2020 BMW M550I
- 2021 BMW M550I
- 2018 BMW X3
- 2019 BMW X3
- 2020 BMW X3
- 2021 BMW X3
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.