# Service bulletins for the 2021 Honda CR\-V

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.

163 bulletins from NHTSA, as of 2026-10-19.

- [A26\-018](/bulletins/11037705.md), 2026-10-01, Service bulletin: ENGINE. Service Bulletin \- Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, and/or misfire. In some cases, DTCs P0300 through P0304 may also be stored \(DTCs are not required for repair\).
- [A26\-016](/bulletins/11037702.md), 2026-10-01, Service bulletin: ENGINE. Service Bulletin \- Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, and/or misfire. In some cases, DTCs P0300 through P0304 may also be stored \(DTCs are not required for repair\).
- [AEBM08262026901](/bulletins/11036424.md), 2026-08-27, Other: ENGINE. Dealer Message \- Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire, and/or DTCs P0300 through P0304 stored.
- [A26\-018](/bulletins/11036415.md), 2026-08-27, Service bulletin: ENGINE. Service Bulletin \- Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire and/or DTCs P0300 thru P0304 stored.
- [A26\-016](/bulletins/11036413.md), 2026-08-27, Service bulletin: ENGINE. Service Bulletin \- Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire and/or DTCs P0300 thru P0304 stored.
- [ATI\&04272026903](/bulletins/11031754.md), 2026-04-30, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the passenger side transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&04102026906](/bulletins/11031497.md), 2026-04-22, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the passenger side transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&03272026903](/bulletins/11030672.md), 2026-04-03, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the passenger side transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&03112026901](/bulletins/11030073.md), 2026-03-16, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the passenger side transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [A25\-077](/bulletins/11021746.md), 2025-08-08, Service bulletin: ENGINE. Service Bulletin \- Oil leak at timing chain tensioner inspection cover due to possible insufficient sealant adhesion on inspection cover.
- [ATI\&03312025902](/bulletins/11016456.md), 2025-04-03, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&01302025902](/bulletins/11013754.md), 2025-02-05, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&01162025901](/bulletins/11013117.md), 2025-01-25, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&01022025906](/bulletins/11013105.md), 2025-01-25, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&12022024907](/bulletins/11011790.md), 2024-12-12, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&11132024906](/bulletins/11010678.md), 2024-11-19, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2022 Accord FHEVs \& 2020\-2022 CR\-V FHEVs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) stored. Customer may also experience engine running rough condition. 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.
- [ATI\&11052024906](/bulletins/11010553.md), 2024-11-14, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&10222024909](/bulletins/11010118.md), 2024-11-06, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&10302024903](/bulletins/11010112.md), 2024-11-06, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2022 Accord FHEVs \& 2020\-2022 CR\-V FHEVs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) stored. Customer may also experience engine running rough condition. 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.
- [ATI\&10162024904](/bulletins/11009200.md), 2024-10-26, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2022 Accord FHEVs \& 2020\-2022 CR\-V FHEVs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) stored. Customer may also experience engine running rough condition. 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.
- [ATI\&10082024902](/bulletins/11009169.md), 2024-10-25, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.
- [ATI\&10112024901](/bulletins/11009168.md), 2024-10-25, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2022 Accord FHEVs, as well as 2017\-2022 CR\-V 1.5Ls \(no 2.4L\), \& 2020\-2022 CR\-V FHEVs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) stored. Customer may also experience engine running rough condition. 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.
- [ATI\&09202024901](/bulletins/11008039.md), 2024-09-26, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2022 Accord FHEVs, as well as 2017\-2022 CR\-V 1.5Ls \(no 2.4L\), \& 2020\-2022 CR\-V FHEVs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) stored. Customer may also experience engine running rough condition. 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.
- [ATI\&09112024907](/bulletins/11007891.md), 2024-09-18, Other: ENGINE. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2018\-2022 Accord FHEVs, as well as 2017\-2022 CR\-V 1.5Ls \(no 2.4L\), \& 2020\-2022 CR\-V FHEVs with a customer complaint of the Malfunction Indicator Light \(MIL\) on with the DTC P030X \(Cylinder Misfire Detected\) stored. Customer may also experience engine running rough condition. 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.
- [ATI\&09122024905](/bulletins/11007888.md), 2024-09-18, Other: POWER TRAIN. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2021 CR\-V FHEVs with a customer complaint of an oil leak coming from the transmission/differential oil seal. The leak may also be found during normal service or an oil change. 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.

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