Nissan Altima 2019–2022 — technical service bulletin
Bulletin NTB22-038 · NHTSA communication 10218755 · issued May 19, 2022
Technical service bulletin
communication type
Back Over Prevention
component
2019–2022
model years
13
vehicle entries
Official summary
RAB WARNING LIGHT ON IN INSTRUMENT PANEL AND/OR DTC B2724-23 STORED IF YOU CONFIRM The customer states an RAB warning light in the instrument panelâ s information display is ON (Figure 1), AND/OR DTC B2724-23 (SONAR CONTROL UNIT - SONAR ECU INTERNAL FAILURE [UNDER VOLTAGE]) is stored. NOTE: A RAB warning light may appear in the vehicle information display. ACTION Reprogram and configure the Sonar Control Unit with the SERVICE PROCEDURE in this bulletin, if applicable.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.