# Service bulletin B120419

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: 10171483
- Published by NHTSA: 2020\-02\-18
- Manufacturer's number: B120419
- Manufacturer's date: 2020\-01\-01
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

DME FAULT MEMORY ENTRY FOR THE CRANKSHAFT SENSOR: This Service Information Bulletin \(Revision 1\) replaces SI B12 04 19 dated February 2019. Technicians may notice this fault logged during a diagnostic session: Fault code: Control module: Fault Text: 160021 DME Crankshaft sensor: general loss of synchronism Environmental conditions are vehicle speed 0 \(stationary\) and engine speed less than 1500 rpm. There is no customer\-facing symptom nor related check control message displayed. Phantom/pseudo fault due to unsuitable DME software. Background: After parking the vehicle and turning off the engine both DME control units go into sleep mode at different times. The DME of cylinder bank 2 \("secondary"\) goes into sleep mode first The DME of cylinder bank 1 \("primary"\) is still awake and can experience a reduction in signal voltage for the crankshaft sensor signal This signal change can mistakenly be evaluated as a skipped crankshaft sensor cog by the DME. If the engine is started while the primary DME is still awake this causes a brief loss of synchronization with the secondary DME. Fault 160021 is logged after three \(3\) consecutive engine starts with this momentary loss of synchronization. Note: Starting the engine after the primary DME has also gone into sleep mode will avoid the loss of synchronization.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171483-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171483-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2018 to 2020 BMW 530E
- 2017 to 2020 BMW 530I
- 2018 to 2019 BMW 540D
- 2020 BMW 540D
- 2017 to 2020 BMW 540I
- 2017 to 2019 BMW 740E
- 2017 to 2020 BMW 740I
- 2016 to 2017 BMW 740LI
- 2020 BMW 745E
- 2018 to 2019 BMW 750I
- 2016 to 2019 BMW 750LI
- 2020 BMW 840I
- 2018 to 2020 BMW B7 ALPINA
- 2018 BMW C 400 X
- 2017 BMW F800 R
- 2018 to 2020 BMW M5
- 2017 BMW M550I
- 2018 to 2020 BMW M550I
- 2017 to 2020 BMW M760I
- 2020 BMW M8
- 2020 BMW M8 GRAN COUPE
- 2019 BMW M850I
- 2020 BMW M850I
- 2019 BMW M850XI
- 2019 to 2020 BMW X5
- 2020 BMW X6

## Recalls for the same vehicles and component

- [2025514](/recalls/tc/2025514.md), 2025-09-25: Engine
- [24V588000](/recalls/nhtsa/24V588000.md), 2024-08-08: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)
- [24V576000](/recalls/nhtsa/24V576000.md), 2024-08-01: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:STARTER ASSEMBLY
- [22V614000](/recalls/nhtsa/22V614000.md), 2022-08-10: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)
- [21V598000](/recalls/nhtsa/21V598000.md), 2021-08-02: ENGINE
- [19V513000](/recalls/nhtsa/19V513000.md), 2019-07-03: ENGINE; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP
- [18V465000](/recalls/nhtsa/18V465000.md), 2018-07-11: ENGINE AND ENGINE COOLING:ENGINE

## 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.
- [B010224](/bulletins/11035496.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.
- [B011325](/bulletins/11032733.md), 2026-05-18, 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.
- [B010126](/bulletins/11032729.md), 2026-05-18, 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.
- [InVehicle\-InApp\-Comm](/bulletins/11028295.md), 2026-02-05, Over\-the\-air update: ENGINE. Service Action: Starter MotorHigh impact energy may cause the circlip for the starter motor pinion positioning to break which may cause the pinion to move in the direction of the starter jaw, causing damage of the starter motor. Also, consequential damage to the flywheel \(torsional vibration damper\) and transmission may occur.
- [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.

JSON: [/v1/bulletins/10171483](/v1/bulletins/10171483)

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