BMW 230I 2016–2017 — technical service bulletin
Bulletin B122816 · NHTSA communication 10146784 · issued Nov 1, 2016
Technical service bulletin
communication type
Engine
component
2016–2017
model years
10
vehicle entries
Official summary
"DME Electrical Wastegate Valve Faults - Adaptation Limit Positions Not Detected. Engine runs with reduced power. Emissions warning lamp lights up. One or more of the following faults are entered in the DME fault memory. 123411 ""Electrical wastegate valve, limit position teach in: End stop (wastegate valve open) not found 123412 - Electrical wastegate valve, limit position teach in: End stop (wastegate valve open) not found Other consequential faults that also may be stored: 123401 - Electrical wastegate valve, adaptation: Cold start not learned 123437 - Electrical wastegate valve: Jammed clo
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.