Under certain conditions, the cylinder head gasket effectiveness may be reduced which may
Honda technical service bulletin A26-009 for 2016-2021 Honda Civic and 2017-2020 Honda Civic Si.
- Bulletin number
- A26-009
- Component
- Engine
- Summary
- 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).
Owners of these vehicles have filed 282 complaints in the engine category.
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