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Service bulletins for the 2019 Nissan Altima

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.

188 on file from NHTSA, as of 2026-10-19.

About C1B56 on the 2019 Nissan Altima: what the code means, and the bulletins and recalls about the same components.

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By trouble code

Only bulletins with trouble code: C1B56 are shown. Show all

Bulletins, newest first
NTB22-073B2024-07-19. Service bulletin. ELECTRICAL SYSTEM. REAR AUTOMATIC BRAKING WARNING LIGHT ILLUMINATED AND/OR DTC C1B56-04 AND/OR C1B56-97 STORED IN THE ADAS CONTROL UNIT This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-073A2023-02-07. Service bulletin. SERVICE BRAKES; BACK OVER PREVENTION; ELECTRICAL SYSTEM. REAR AUTOMATIC BRAKING WARNING LIGHT ILLUMINATED AND/OR DTC C1B56-04 AND/OR C1B56-97 STORED IN THE ADAS CONTROL UNIT This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0732022-08-31. Service bulletin. BACK OVER PREVENTION. REAR AUTOMATIC BRAKING WARNING LIGHT ILLUMINATED AND/OR DTC C1B56-04 OR C1B56-97 STORED IN THE ICC/ADAS2 CONTROL MODULE SERVICE INFORMATION If the customer states the rear automatic braking (RAB) warning light was illuminated and “Malfunction See Owner’s Manual” appears in the message center (Figure 1), AND / OR DTC C1B56-04 and/or C1B56-97 are stored in the ICC/ADAS2 Control Module. Refer to the information on page 2 to determine next steps.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.