BMW X1 2016–2020 — technical service bulletin
Bulletin B340820 · NHTSA communication 10179813 · issued Aug 1, 2020
Technical service bulletin
communication type
Electronic Stability Control
component
2016–2020
model years
10
vehicle entries
Official summary
DELIVERY STOP - OBD ACCESS IN DSC CONTROL UNIT: Aftermarket scan tools cannot read fault codes in the Dynamic Stability Control (DSC) unit via the On Board Diagnostic (OBD) socket. The DSC data is not processed correctly in the BDC and therefore cannot transmit any diagnostic requests via the OBD using aftermarket scan tools.
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.