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B1603 on the 2019 Alfa Romeo Stelvio

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name B1603
08022212022-09-26. Service bulletin. Flash: Drive Style Control Module (DSCM) Updates This bulletin involves checking if the vehicle dynamic (DNA) selector is operableand possibly reprogramming the DSCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Code (DTC) has been set in the DSCM:U1700-87 - Body Control Module (BCM) - Missing Message. U0011-14 - Down Rotary Knob Failure-Circuit Short To Ground Or Open. U0011-15 - Down Rotary Knob Failure-Circuit Short To Battery Or Open. U0012-15- Up Rotary Knob Failure-Circuit Short To Battery Or Open. B1603-68 - Rotary Encoder Fault-Event Information. The following DTC has been set in the Body Control Module (BCM):U1A18-87 - DSCM (Drive Style Control Module)-Missing Message. The customer may also comment on the following: The vehicle dynamic (DNA) selector is inoperable.
08-022-212021-03-15. Service bulletin. Flash: Drive Style Control Module (DSCM) Updates This bulletin involves checking if the vehicle dynamic (DNA) selector is operableand possibly reprogramming the DSCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the followingDiagnostic Trouble Code (DTC) has been set in the DSCM:U1700-87 - Body Control Module (BCM) - Missing Message. U0011-14 - Down Rotary Knob Failure-Circuit Short To Ground Or Open. U0011-15 - Down Rotary Knob Failure-Circuit Short To Battery Or Open. U0012-15- Up Rotary Knob Failure-Circuit Short To Battery Or Open. B1603-68 - Rotary Encoder Fault-Event Information. The following DTC has been set in the Body Control Module (BCM):U1A18-87 - DSCM (Drive Style Control Module)-Missing Message. The customer may also comment on the following: The vehicle dynamic (DNA) selector is inoperable.

2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.