BMW i3 2014–2018 — technical service bulletin
Bulletin B122916 · NHTSA communication 10146734 · issued Dec 1, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2018
model years
5
vehicle entries
Official summary
SERVICE ENGINE SOON (MIL) - RDME FC 124301/124302. Malfunction indicator light illuminated. Fuel-air mixture error codes in the range extender digital motor electronics (RDME). Possible hardware defect of: The oxygen sensor before catalytic converter.
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.