BMW M2 2016–2020 — technical service bulletin
Bulletin B120420 · NHTSA communication 10172489 · issued Feb 1, 2020
Technical service bulletin
communication type
Equipment
component
2016–2020
model years
12
vehicle entries
Official summary
MIL LIGHT ILLUMINATED AT LOW AMBIENT TEMPERATURES. After engine start the malfunction indicator lamp (MIL) and Check Control message (ID 29) "Engine fault! Power loss" are displayed in the instrument cluster. In addition The following fault codes are stored in the Digital Motor Electronics (DME) Engine runs in failsafe mode Engine cannot exceed 800 - 1200 RPMs.
Vehicles covered
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.