BMW X1 2016–2020 — technical service bulletin
Bulletin B122117 · NHTSA communication 10176362 · issued May 1, 2020
Technical service bulletin
communication type
Electrical System
component
2016–2020
model years
10
vehicle entries
Official summary
ROUGH RUNNING IMMEDIATELY AFTER A COLD START: Immediately after a cold start the engine may run roughly during the catalyst heating period. Depending on the severity of this situation the malfunction indicator lamp (MIL) can be illuminated and the following fault code may be set: Fault code Control module Fault code text 151001 DME Ignition angle adjustment while idle speed cold start: ignition angle early In some circumstances if the vehicle is switched into a drive gear (R or D) when the RPM are low the engine may switch off. Should this occur the engine may be restarted normally. Software e
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.