BMW 335 2007–2013 — technical service bulletin
Bulletin B124015 · NHTSA communication 10147817 · issued Nov 1, 2015
Technical service bulletin
communication type
Electrical System
component
2007–2013
model years
15
vehicle entries
Official summary
"Due to a DME software status error, the on-board diagnostics (OBD) for the catalytic convertor and downstream oxygen sensor may not function properly. This could result that the OBD readiness for ""Oxygen sensor"" will not set as completed, but it would not have any effect on the actual tailpipe emissions."
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.