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SIB 12 08 17: Catalytic converter fault codes

Catalytic converter fault codes on BMW F15 models (2014–2017); BMW explains the cause and the approved repair.

BMW service bulletin · NHTSA ID 10149227 · May 2017 · also written SI B12 08 17, B120817

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.

Powertrain faults due to chafing of engine wiring harness.

NHTSA's summary of this communication (excerpt)

Official document on NHTSA (PDF) →

Details

Bulletin numberSIB 12 08 17
Also written: SI B12 08 17, B120817, 12 08 17, SIB-12-08-17, SI B120817
NHTSA ID10149227
Document IDs filedB120817
TypeService bulletin
Date
ModelsX5
Model years2014–2017
ChassisF15
EnginesN20, N55, N57, N63
Component (NHTSA)Engine
Power Train

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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  • SIB 01 11 25 EGR valve warranty extension EGR valve warranty extension on BMW F01/F02/F10/F15 models (2014–2018); BMW extended the warranty on this part for eligible cars. Warranty extension · Sep 2026

Before you pay: check your VIN for recalls

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.

Check recalls by VIN →

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.

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