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B1603 on the 2020 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
08020212022-09-26. Service bulletin. Flash: Drive Style Control Module (DSCM) Updates This bulletin involves checking if the vehicle dynamic (DNA) selector is operable and 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 one or more of the following DTCs have been set in the Drive Style Control Module (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. U0012-14 - Up Rotary Knob Failure-Circuit Short To Ground 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.
08-020-212021-03-15. Service bulletin. Flash: Drive Style Control Module (DSCM) Updates This bulletin involves checking if the vehicle dynamic (DNA) selector is operable and 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 one or more of the following DTCs have been set in the Drive Style Control Module (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. U0012-14 - Up Rotary Knob Failure-Circuit Short To Ground 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.
08-103-20 REV. A2021-03-01. Service bulletin. Flash: Drive Style Control Module (DSCM) Updates This bulletin involves checking if the vehicle dynamic (DNA) selector is operable and 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 one or more of the following Diagnostic Trouble Codes (DTCs) have been set: 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. U0012-14 - Up Rotary Knob Failure-Circuit Short To Ground 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.
08-103-202021-03-01. Service bulletin. Flash: Drive Style Control Module (DSCM) Updates This bulletin involves checking if the vehicle dynamic (DNA) selector is operable and 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 one or more of the following Diagnostic Trouble Codes (DTCs) have been set: 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. U0012-14 - Up Rotary Knob Failure-Circuit Short To Ground 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.

4 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.