Service bulletin Service Bulletin

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10108586
Published by NHTSA	2017-07-17
Manufacturer's number	Service Bulletin
Manufacturer's date	2015-04-15
NHTSA component	ENGINE AND ENGINE COOLING

NHTSA's summary

Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2008-11 Accord L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
HONDA ACCORD	2008, 2009, 2010, 2011

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SB09010 ver3	2021-12-13. Service bulletin. Engine Rattles at Cold Start-Up Supersedes 09-010, dated March 3, 2015 to revise the information highlighted in yellow.
SB09010 ver4	2021-12-13. Service bulletin. Engine Rattles at Cold Start-Up Supersedes 09-010, dated March 3, 2015 to revise the information highlighted in yellow.
A20-023	2020-03-11. Service bulletin. Service Bulletin - The front rocker arm oil control valve is leaking.
A13-078	2019-01-05. Service bulletin. "Service bulletin - American Honda is announcing a powertrain warranty extension as a result of a settlement of a class action captioned, Soto et al.v. American Honda Motor Co., Inc., Case No. 3:12-cv-1377-SI (N.D. Cal.). The piston rings on certain cylinders may rotate and align, which can lead to spark plug fouling. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on. American Honda is extending the powertrain warranty to cover repairs related to engine misfire (that triggers DTCs P0301 through P0304) to 8 years with unlimited mileage from the original date of purchase and has settled a class action based on this remedial measure."
A12-087	2019-01-05. Service bulletin. "Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2008-11 Accord L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first. The warranty extension 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 tittle under any state's law."
A18070	2018-09-04. Service bulletin. Service bulletin - Emission certification labels that were replaced on a small number of vehicles may have been replaced with a label listing incorrect information. The affected emission labels are replacement service parts, and were not installed at the factory; they were installed during postmanufacturing repairs that required replacement of the underlying part. This will cause the vehicle to be non-compliant with emissions regulations.
Service Bulletin	2018-07-16. Service bulletin. Service bulletin - One or both A/F Sensor 1 (Air Fuel Ratio) caps may have fallen off and bored a hole through the affected WU-TWC (Warm Up Three Way Catalyst).
A13-078	2018-07-02. Service bulletin. Service bulletin - American Honda is announcing a powertrain warranty extension as a result of a settlement of a class action captioned, Soto et al.v. American Honda Motor Co., Inc., Case No. 3:12-cv-1377-SI (N.D. Cal.). The piston rings on certain cylinders may rotate and align which can lead to spark plug fouling. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.
A13-078	2018-05-14. Service bulletin. Service bulletin - The piston rings on certain cylinders may rotate and align which can lead to spark plug fouling. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.
Service Bulletin	2018-03-05. Service bulletin. Service bulletin - The piston rings on certain cylinders may rotate and align which can lead to spark plug fouling. This can set DTCs P0301 through P0304 and cause the MIL to come on.