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August 26, 2026 Service bulletin

Under certain conditions, the cylinder head gasket effectiveness may be reduced which may

Honda technical service bulletin A26-010 for 2022-2024 Honda Civic and 2022-2026 Honda Civic Si.

Bulletin number
A26-010
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, misfire and/or DTCs P0300 thru P0304 stored.

Owners of these vehicles have filed 27 complaints in the engine category.

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