# Service bulletin B160420

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10186216
- Published by NHTSA: 2021\-02\-01
- Manufacturer's number: B160420
- Manufacturer's date: 2020\-12\-01
- NHTSA component: ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

## NHTSA's summary

?TANK VENTILATION DIAGNOSIS: There is software error in the diagnosis of the fuel tank ventilation valve. This error may result in the Service Engine Soon \(MIL\) light not being activated if a fault is found in the tank vent system after a second fault detection. This error will also disable diagnosis of the catalytic converter and oxygen sensor \(if a fault is detected in the tank vent system\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10186216-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10186216-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Equipment and accessories

## Vehicles listed

- 2018 to 2021 BMW M5
- 2020 to 2021 BMW M8
- 2020 BMW M8 GRAN COUPE
- 2020 to 2021 BMW X3
- 2020 to 2021 BMW X5
- 2021 BMW X6
- 2020 BMW X6 M

## Recalls for the same vehicles and component

- [2026331](/recalls/tc/2026331.md), 2026-07-08: Engine
- [2026040](/recalls/tc/2026040.md), 2026-01-30: Engine
- [2025514](/recalls/tc/2025514.md), 2025-09-25: Engine
- [24V576000](/recalls/nhtsa/24V576000.md), 2024-08-01: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [21V598000](/recalls/nhtsa/21V598000.md), 2021-08-02: ENGINE
- [19V513000](/recalls/nhtsa/19V513000.md), 2019-07-03: ENGINE; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

## Other bulletins for the same vehicles and component

- [B110426](/bulletins/11035500.md), 2026-08-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. The manual starting of electronic engine oil level measurement from inside the vehicle, usually afterperforming an engine oil service task, is inoperative or it may lock up at between a 15% to 30% completionrate.
- [B011524](/bulletins/11035499.md), 2026-08-03, Warranty extension: ENGINE. The NVLD modules limited warranty for defects in materials and/or workmanship has been extended to 15 years / 150,000 miles as determined from the vehicles original in\-service / first delivery date.
- [B010921](/bulletins/11035498.md), 2026-08-03, Warranty extension: ENGINE. The NVLD limited emissionrelated warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles as determined from the original in\-service date.
- [B010324](/bulletins/11035497.md), 2026-08-03, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in\-service / delivery date.
- [B010324](/bulletins/11032731.md), 2026-05-18, Warranty extension: ENGINE. The EVAP systems purge \(vent\) valve limited warranty for defects in materials or workmanship has been extended to 15 years / 150,000 miles as determined from the original in\-service date.
- [B011724](/bulletins/11024203.md), 2025-10-09, Warranty extension: ENGINE. The Fuel Injector Condition\-Specific Repair Coverage Program applies to qualifying repairs for the required replacement of one or more the fuel injectors which were determined to have failed due to a buildup of external corrosion in the engine’s center fuel injector bore area that resulted after this location was periodically contaminated by engine coolant residue over time. This special program’s coverage is 15 years / 150,000 miles as determined from the vehicle's original in\-service / first delivery date.
- [B063525](/bulletins/11020074.md), 2025-07-02, Other: ENGINE. Engine Return
- [B063025](/bulletins/11017562.md), 2025-05-02, Other: ENGINE. Coolant Pump Return
- [B062525](/bulletins/11016470.md), 2025-04-04, Other: ENGINE. Bearing Shell Return
- [B110521](/bulletins/11012077.md), 2024-12-31, Service campaign: ENGINE. The belt pulley on the mechanical coolant pump may fracture allowing the engine drive belt to come off thecoolant pump and alternator.

JSON: [/v1/bulletins/10186216](/v1/bulletins/10186216)

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