# Service bulletin Customer Letter

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.

- Type: Service bulletin
- NHTSA id: 10143243
- Published by NHTSA: 2018\-07\-30
- Manufacturer's number: Customer Letter
- Manufacturer's date: 2018\-07\-17
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Customer letter \- Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle; refer to the address card for the affected VIN. The 3\-way coolant joint was incorrectly manufactured, and may be internally blocked. If the joint is blocked, a technician will not be able to fill the cooling system properly, which may lead to overheating of the engine.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143243-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143243-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2017 HONDA CIVIC

## Other bulletins for the same vehicles and component

- [A26\-099](/bulletins/11037711.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\-097](/bulletins/11037709.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\-009](/bulletins/11037695.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\-008](/bulletins/11037693.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\-099](/bulletins/11036654.md), 2026-09-02, 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\-097](/bulletins/11036649.md), 2026-09-02, 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.
- [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\-099](/bulletins/11036419.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\-097](/bulletins/11036417.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\-009](/bulletins/11036408.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.

JSON: [/v1/bulletins/10143243](/v1/bulletins/10143243)

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