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Service bulletins for the 2021 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.

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

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By component

By trouble code

Bulletins, newest first
NTB10-126C2023-03-07. Service bulletin. WHEELS. WHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB09-081J2023-03-07. Service bulletin. VISIBILITY; STRUCTURE. WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB08-097K2023-03-07. Service bulletin. STEERING. DIAGNOSIS OF VEHICLE PULL (DRIFT) AND/OR STEERING WHEEL OFF-CENTER 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.
NTB22-038A2023-02-07. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM; BACK OVER PREVENTION. RAB WARNING LIGHT ON IN INSTRUMENT PANEL AND/OR DTC B2724-23 STORED This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-1042023-01-10. Service bulletin. STRUCTURE. DIAGNOSING DOOR LOCK OPERATION SERVICE INFORMATION If a customer describes a concern of a door not opening and/or unlocking properly, on any of the APPLIED VEHICLES, use the Questions for the Customer below to help reproduce the concern, and then follow the SERVICE PROCEDURE starting on page 2 to determine if the Door Lock should be replaced. • Do not replace a Door Lock unless instructed to by the SERVICE PROCEDURE. Questions for the Customer: • When did you first notice the issue? • Is it consistent or intermittent? • Under what conditions does it occur? • Does it seem more likely to happen to a specific passenger/person in your family? • Has there been any change to the issue since it first began?
NTB15-049Z2023-01-10. Service bulletin. ELECTRICAL SYSTEM. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-1012022-12-06. Service bulletin. POWER TRAIN. DRIVE SHAFT BOOT SERVICE INFORMATION SERVICE INFORMATION If a Drive Shaft (Axle Shaft) Boot on an APPLIED VEHICLE is found to be leaking grease, AND There is no abnormal noise or obvious CV Joint risk due to water intrusion and/or complete grease loss, check for REPAIR KIT-DUST BOOT (CV Joint Boot Kit) availability. • If there is a REPAIR KIT-DUST BOOT (CV Joint Boot Kit) available for the vehicle being repaired, do NOT replace the axle. Install a new boot kit following the procedure in the ESM. o Refer to the ESM: TRANSMISSION & DRIVELINE > FRONT AXLE > REMOVAL AND INSTALLATION > FRONT DRIVE SHAFT BOOT o If the complete axle (drive shaft) is replaced when only a new boot is required, the over-repair may be charged back to the dealer. • If there is NOT a REPAIR KIT-DUST BOOT (CV Joint Boot Kit) available for the vehicle being repaired, refer to the ESM for further diagnostic information. IMPORTANT: When servicing vehicles with staked axle nuts, refer to NTB21-013 to prevent Drive Shaft thread damage.
NTB15-049Y2022-12-06. Service bulletin. ELECTRICAL SYSTEM. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB10-029I2022-12-06. Service bulletin. POWER TRAIN. ABNORMAL NOISE, VIBRATION AND/OR BINDING FEELING FROM REAR DIFFERENTIAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0972022-11-12. Service bulletin. ENGINE AND ENGINE COOLING. DTC P0404 STORED IN THE ECM AT TEMPERATURES BELOW 32°F IF YOU CONFIRM DTC P0404 (EGR A CONTROL) is stored in the ECM at temperatures below 32°F. ACTION 1. Confirm the current ECM part number. 2. Reprogram the ECM, if applicable.
NTB21-013A2022-10-07. Service bulletin. POWER TRAIN; WHEELS. PREVENT FRONT AXLE THREAD DAMAGE DURING NUT REMOVAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB12-055I2022-10-07. Service bulletin. POWER TRAIN. CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION 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.
NTB14-012H2022-08-30. Service bulletin. ELECTRICAL SYSTEM. REMOTE ENGINE START NOT WORKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0382022-08-27. Service bulletin. BACK OVER PREVENTION. 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 panel’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.
NTB10-029H2022-08-26. Service bulletin. POWER TRAIN. NISSAN AWD MODELS; ABNORMAL NOISE, VIBRATION AND/OR JUDDER FROM REAR DIFFERENTIAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0512022-08-26. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:HORN. HORN INOPERATIVE IF YOU CONFIRM The horn on an APPLIED VEHICLE is inoperative. ACTION Inspect the horn pad for a pinched ground wire. If a pinched ground wire is found, replace the high and low horns.
NTB21-094A2022-08-26. Service bulletin. POWER TRAIN. TRANSFER ASSEMBLY SEAL REPLACEMENT FOR AWD FRONT DRIVE SHAFT REMOVAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB17-003E2022-08-26. Service bulletin. POWER TRAIN. FLUID LEAK CAUSED BY TRANSFER ASSEMBLY RIGHT SIDE DRIVE SHAFT OIL SEAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0262022-06-08. Service bulletin. ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. SERVICE INFORMATION FOR FUEL GAUGE INACCURATE WITH DTCS STORED IN ECM SERVICE INFORMATION If a fuel level sensor has been diagnosed as sending an incorrect level signal, and one or more of the following DTCs are stored in the ECM, do not replace the entire “Fuel Level Sensor Unit, Fuel Filter and Fuel Pump Assembly” (fuel pump assembly). The fuel level sensor can be replaced separately. • P0460 (FUEL LEV SEN SLOSH) • P0461 (FUEL LEVEL SENSOR) • P0462 (FUEL LEVL SEN/CIRC) • P0463 (FUEL LEVL SEN/CIRC) NOTE: Warranty claims referring to fuel level issues that result in the replacement of the entire fuel pump assembly will be charged back.
NTB19-071B2022-06-03. Service bulletin. AIR BAGS. DTC B00A0-00 STORED This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB22-0202022-05-20. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS. SERVICE INFORMATION FOR BRAKE SWITCH ADJUSTMENT FOR DTC C1142 AND/OR C1116 STORED SERVICE INFORMATION DTC C1142 (PRESS SEN CIRCUIT) and/or C1116 (STOP LAMP SW) may be stored if the Stop Lamp Switch and/or the Brake Pedal Position Switch are out of adjustment. Before replacing any components for DTCs C1142 (PRESS SEN CIRCUIT) and/or C1116 (STOP LAMP SW), stored as past or current, confirm that the Stop Lamp Switch and the Brake Pedal Position Switch are properly adjusted. If either the Stop Lamp Switch and/or the Brake Pedal Position Switch are found to be out of adjustment, adjust them as per the ESM, and then clear the DTCs and perform DTC confirmation. • Refer to the ESM: BRAKES > BRAKE SYSTEM > PERIODIC MAINTENANCE > BRAKE PEDAL > Adjustment
NTB17-003D2022-05-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:SEALS/GASKETS; POWER TRAIN. FLUID LEAK CAUSED BY TRANSFER ASSEMBLY RIGHT SIDE DRIVE SHAFT OIL SEAL This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB15-049X2022-05-20. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM. TELEMATICS SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

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