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Service bulletin WE - A13-078

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)
TypeService bulletin
NHTSA id10099306
Published by NHTSA2017-05-16
Manufacturer's numberWE - A13-078
Manufacturer's date2015-09-05
NHTSA componentENGINE; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

"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."

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

Electrical system, Engine, Software

Trouble codes named

P0301, P0302, P0303, P0304

Vehicles listed
HONDA ACCORD2008, 2009, 2010, 2011, 2012

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
A13-0782018-07-02. 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.
DLR MSG - HONDA2017-01-09. Service bulletin. "DEALER MESSAGE - AMERICAN HONDA PREVIOUSLY ANNOUNCED SAFETY RECALLS FOR SOME 2008 AND 2009 ACCORD SEDAN VEHICLES TO REFLASH AND/OR REPLACE THE SRS CONTROL UNITS TO REDUCE THE POTENTIAL FOR INADVERTENT DEPLOYMENT AND IMPROVE CRASH DETECTION. VEHICLES AFFECTED BY THE POSSIBILITY OF INADVERTENT DEPLOYMENT NOW HAVE AN AVAILABLE REPAIR. THE RECENTLY UPDATED BULLETIN 15-078, SAFETY RECALL: 2008–09 ACCORD SRS UNIT UPDATE (REWRITE) IS UPDATED AND IT ALLOWS AFFECTED VEHICLES TO RECEIVE THE RECOMMENDED REPAIR. SOFTWARE TO SUPPORT THIS CAMPAIGN HAS BEEN DEPLOYED IN THE MOST RECENT HDS SOFTWARE DEPLOYMENT VIA HDS DOWNLOAD MANAGER."
A15-0782017-01-05. Service bulletin. SERVICE BULLETIN - THE SRS THRESHOLD SETTING FOR THE SIDE IMPACT SENSOR IS SUCH THAT WITH THE VEHICLE IGNITION ON, IF THERE IS A STRONG, NON-VEHICULAR COLLISION IMPACT TO THE LOWER BODY OF THE VEHICLE OR IF A DOOR IS SHUT WITH EXTREME FORCE, THE SRS UNIT MAY INTERPRET THE INPUT AS A CRASH AND COMMAND THE SEAT AIRBAG AND/OR SIDE CURTAIN AIRBAG TO DEPLOY. THE TECHNICIAN WILL REPROGRAM THE SRS UNIT SOFTWARE.
SB-11-0492011-09-27. Service bulletin. HONDA SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. THE FUEL INJECTOR AND VTC TIMING AT COLD START AY CREATE DEPOSITS ON THE OIL CONTROL RINGS THAT COULD LEAD TO INCREASED OIL CONSUMPTION. *RM UPDATED 10/24/11. *PE UPDATED 11/28/11. *PE UPDATED 6/28/13. *PE