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SIB 12 27 18: Catalytic converter fault codes
Catalytic converter fault codes on B46/B48 engines (2016–2018); BMW explains the cause and the approved repair.
BMW service bulletin · NHTSA ID 10167994 · Oct 2019 · also written SI B12 27 18, B122718
What it covers
A service bulletin tells BMW technicians how to diagnose or fix a known issue. It is not a recall: a repair under a bulletin is normally paid by the owner unless the car is still under warranty or a warranty extension applies.
SERVICE ACTION: PROGRAM THE CONTROL UNIT (DME): If a Valvetronic fault occurs, the catalytic converter heating intensity may be reduced. This situation will not generate a customer complaint.
Details
| Bulletin number | SIB 12 27 18 Also written: SI B12 27 18, B122718, 12 27 18, SIB-12-27-18, SI B122718 |
|---|---|
| NHTSA ID | 10149576, 10167994 (revisions) |
| Document IDs filed | B122718 |
| Type | Service bulletin |
| Date | (first filed Oct 2018) |
| Models | 330e, 530e, 530i, 740e |
| Model years | 2016–2018 |
| Chassis | G12, G30, F30 |
| Engines | B46/B48 |
| Component (NHTSA) | Engine Engine And Engine Cooling Engine And Engine Cooling › Exhaust System › Emission Control › Catalytic Convertor |
Model, year and engine coverage comes from NHTSA's records. Not every car in this range is affected; the official document lists the exact production dates and conditions.
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Some failures are covered by a safety recall or a warranty extension. Our free recall check lists NHTSA recalls for your car's model and year.
Source: NHTSA Manufacturer Communications (public data). BimmerBench is not affiliated with BMW or NHTSA. The title and description above are our own plain-English summary; the full bulletin is BMW's document, linked above.