Service bulletins for the 2021 Honda Civic
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.
79 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| APaS07272022901 | 2022-08-02. Service bulletin. ELECTRICAL SYSTEM. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2021 Civics & CR-Vs with a customer complaint of a inop, blank, or black meter display with no prior repairs made to the vehicle. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
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| ATI&07112022903 | 2022-08-02. Service bulletin. ENGINE AND ENGINE COOLING. Dealer message - American Honda (AHM) is investigating certain 2019-2022 Civic & CR-V 1.5Ts with customer complaint of oil leak from the timing chain case cover. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| ATI&06222022901 | 2022-07-07. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Dealer message - American Honda (AHM) is investigating certain 2019-2022 Civic & CR-V 1.5Ts with customer complaint of oil leak from the timing chain case cover. To fully understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| A20-036 | 2022-05-06. Service bulletin. SUSPENSION. Service bulletin - There is a rattling coming from the front of the vehicle. The rubber damper cap(s) are faulty. |
| A21100B | 2022-02-04. Service bulletin. AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT. ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating the faulty component. In most situations, the SRS Unit should be last on the list of components to replace. Here is a quick tip for troubleshooting a faulty seat weight sensor. |
| A21100B | 2022-01-11. Service bulletin. AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; SEATS. ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating the faulty component. In most situations, the SRS Unit should be last on the list of components to replace. Here is a quick tip for troubleshooting a faulty seat weight sensor. |
| ATI&10052021904 | 2021-10-16. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
| ATI&09102021905 | 2021-09-15. Service bulletin. SERVICE BRAKES; SERVICE BRAKES, AIR; SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
| ATI&09072021901 | 2021-09-15. Service bulletin. ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2021 Civics, CR-Vs & HR-Vs with a customer complaint of the audio screen turning black, blank or inop. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| ATI&08252021905 | 2021-09-02. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
| A21080A | 2021-09-02. Service bulletin. FORWARD COLLISION AVOIDANCE. "ServiceNews Article - When returning the vehicle to the client, inform them that if the message Adaptive Cruise Control System Problem comes back on when the vehicle is driven in freezing conditions, it is likely because of snow or ice buildup on the radar. Advise the client of the following procedure to clean the front grille where the radar is located." |
| A21-068 | 2021-09-02. Service bulletin. FORWARD COLLISION AVOIDANCE; ELECTRICAL SYSTEM. Service Bulletin - The ACC system error message comes on while driving when outside temperatures are low/near freezing. |
| ATI&08092021905 | 2021-08-17. Service bulletin. SERVICE BRAKES, HYDRAULIC; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
| ATI&08092021901 | 2021-08-17. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accord 1.5Ts, Civic Sis & CR-Vs with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected) or P0172 (Fuel System Too Rich) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| AATS210301 | 2021-08-13. Service bulletin. ELECTRICAL SYSTEM. Tech Line Summary Article - If you have a customer stating their Apple iPhone 12 (all models: iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max) does not charge when using the wireless charger, please let them know that we are aware of these concerns and are currently looking into it. Replacing the wireless charger or using another iPhone 12 will not address the customer's concern. Please inform your customer to use a USB charging cord until a repair is available. |
| ATI&07222021904 | 2021-07-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
| ATI&07202021901 | 2021-07-27. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accord 1.5Ts, Civic Sis & CR-Vs with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected) or P0172 (Fuel System Too Rich) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| ONLG5O07062021 | 2021-07-21. Service bulletin. VISIBILITY. Owner Notification Letter - On some 2016-21 Civic models, the A/C condenser may leak refrigerant. American Honda is extending the warranty on the A/C condenser to 10 years from the original date of purchase with unlimited miles. This warranty extension provides coverage for the original owner and any subsequent owners. No action is required on your part unless you experience a problem. |
| ATI&07072021908 | 2021-07-20. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
| ATI&07012021 | 2021-07-20. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accord 1.5Ts, Civic Sis & CR-Vs with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected) or P0172 (Fuel System Too Rich) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| A21060B | 2021-07-03. Service bulletin. ELECTRICAL SYSTEM. ServiceNews Article - If you have a customer stating their Apple iPhone 12 (all models: iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max) does not charge when using the wireless charger, let them know that we are aware of these concerns and are currently looking into it. Replacing the wireless charger or using another iPhone 12 will not address the customer's concern. Advise your customer to use a USB charging cord until a repair is available. |
| ATI&06152021904 | 2021-06-22. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accord 1.5Ts, Civic Sis & CR-Vs with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected) or P0172 (Fuel System Too Rich) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind. |
| A19-091 | 2021-06-22. Service bulletin. VISIBILITY. Service Bulletin - American Honda is extending the warranty on the A/C condenser to 10 years from the original date of purchase with unlimited miles. This warranty extension only covers vehicles that have a defective A/C condenser from the factory. The A/C condenser was not manufactured to specification. As a result, corrosion may develop in the form of tiny holes in the condenser tube walls that allow the refrigerant to leak out. This does not apply to any vehicle that has a leaking condenser due to foreign object damage. It also does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer, or has a branded or similar title under any state's law. |
| SS1023006 | 2021-06-18. Service bulletin. ENGINE AND ENGINE COOLING. SS 1023006 Successful Regen Reference for EPA 07 MBE 900 Engines |
| ATI&06032021 | 2021-06-11. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Civics with a customer complaint of long brake pedal travel, almost reaching the floor. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.