BMW i3 2014–2015 — technical service bulletin
Bulletin 120914 · NHTSA communication 10148110 · issued Jul 1, 2014
Technical service bulletin
communication type
Engine
component
2014–2015
model years
2
vehicle entries
Official summary
Fault Code 121001 Stored in RDME. The Check Engine light (CEL) is illuminated in the instrument cluster and fault code 121001 "Catalytic converter: Efficiency too low" is stored in the RDME. This fault could occur during the initial REx engine operation cycle. CAUSE Manufacturing fluid in the exhaust system
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.