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Service bulletins for the 2012 Honda Accord

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.

51 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
SB09010 ver32021-12-13. Service bulletin. ENGINE AND ENGINE COOLING. Engine Rattles at Cold Start-Up Supersedes 09-010, dated March 3, 2015 to revise the information highlighted in yellow.
A20-0232020-03-11. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The front rocker arm oil control valve is leaking.
A13-0792019-01-05. Service bulletin. EQUIPMENT; ENGINE. "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."
A13-0782019-01-05. Service bulletin. EQUIPMENT; ENGINE. "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."
A180702018-09-04. Service bulletin. ENGINE AND ENGINE COOLING. 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.
A13-0782018-07-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE. 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.
A13-0782018-05-14. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. 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 Bulletin2018-03-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 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.
A13-0782018-02-21. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. 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.
Service Bulletin2018-02-12. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. 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 through P0304 and cause the MIL to come on.
Service Bulletin2017-12-05. Service bulletin. ENGINE. Service bulletin - At cold start-up, the engine rattles loudly for about 2 seconds. The variable valve timing control (VTC) actuator is defective.
Service Bulletin2017-07-31. Service bulletin. ENGINE AND ENGINE COOLING. Service bulletin - Engine rattles at cold start-up.
A15-0202017-06-29. Service bulletin. ENGINE. THE REAR CYLINDER HEAD COVER GASKET LEAKS OIL.
A09-0102017-06-28. Service bulletin. EQUIPMENT; ENGINE. SERVICE BULLETIN - AT COLD START-UP, THE ENGINE RATTLES LOUDLY FOR ABOUT 2 SECONDS. THE VARIABLE VALVE TIMING CONTROL (VTC) ACTUATOR IS DEFECTIVE.
A15110E2017-05-23. Service bulletin. ENGINE. SERVICE NEWS ARTICLE - DOES THE ENGINE RATTLE AT COLD STARTUP FOR 1 TO 2 SECONDS WHEN IT’S COLD OUTSIDE? CHANCES ARE THE VTC ACTUATOR IS THE CULPRIT. KEEP IN MIND SIMPLY REPLACING THE VTC ACTUATOR USING CURRENT PARTS STOCK WON’T FIX THIS RATTLE IF IT’S ONLY HEARD UNDER THESE CONDITIONS.
ATS1503012017-05-22. Service bulletin. ENGINE. "TECHLINE SUMMARY ARTICLE - EDITOR’S NOTE: THIS ARTICLE REPLACES THE ONE POSTED IN SEPTEMBER 2015 TO EXTEND THAT ARTICLE’S SHELF LIFE. THE ISSUES COVERED ARE STILL BEING ADDRESSED. DO YOU HAVE A VEHICLE THAT MAKES AN ENGINE RATTLE FOR 1 TO 2 SECONDS WHEN STARTED AFTER A COLD OVERNIGHT SOAK BELOW 32° F? THIS RATTLE IS MOST LIKELY RELATED TO THE VTC ACTUATOR."
WE - A13-0782017-05-16. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. "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."
WE - A13-0782017-05-15. Service bulletin. ENGINE. SERVICE BULLETIN - WARRANTY EXTENSION: MIL COMES ON WITH DTCS P0301 THRU P0304 - 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.
A13-0212017-05-12. Service bulletin. ENGINE. "SERVICE BULLETIN - THE MIL COMES ON WITH ONE OF THESE DTCS: • P2646/P2651 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT LOW VOLTAGE). • P2647/P2652 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT HIGH VOLTAGE). NOTE: THE SYMPTOM MAY BE INTERMITTENT AND YOU MAY NOT BE ABLE TO DUPLICATE IT AFTER CLEARING THE DTC. THE ROCKER ARM OIL PRESSURE SWITCH MAY FAIL INTERMITTENTLY."
A09-010.V42017-01-05. Service bulletin. ENGINE. SERVICE BULLETIN - REPLACE THE VTC ACTUATOR IF THE ENGINE RATTLES LOUDLY FOR 2 SECONDS DURING COLD START-UP.
A09-010.V32017-01-05. Service bulletin. ENGINE. SERVICE BULLETIN - REPLACE THE VTC ACTUATOR IF THE ENGINE RATTLES LOUDLY FOR 2 SECONDS DURING COLD START-UP.
A13-0782016-11-04. Service bulletin. ENGINE. SERVICE BULLETIN - THE PISTON RINGS ON CERTAIN CYLINDERS MAY ROTATE AND ALIGN WHICH CAN LEAD TO SPARK PLUG FOULING. SPARK PLUG FOULING MAY REUSLT IN ROUGH ENGINE IDLE AND/OR ENGINE MISFIRE.
09-0102015-03-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). HONDA: THERE IS A LOUD RATTLING NOISE COMING FROM ENGINE WHICH LAST FOR 2 SECONDS WHEN TEMPERATURE IS COLD. *LJ
SB-13-0782013-11-22. Service bulletin. ENGINE; POWER TRAIN. HONDA: A POWERTRAIN WARRANTY EXTENSION RESULTING FROM SETTLEMENT, COVERING REPAIRS OF ENGINE MISFIRE, REGARDING PISTON RINGS ON CERTAIN CYLINDERS THAT ROTATE AND ALIGN, CAN LEAD TO SPARK PLUGS FOULING, ON SOME VEHICLES. MODEL 2008-2012 ACCORD. *PE
SB-1022132013-11-22. Service bulletin. ENGINE. HONDA: VEHICLES WITH MULTIMODEL VCM2 WOULD EXPERIENCE MISFIRE DUE TO ENGINE MISFIRE OF A FOULED PLUG AND A WARRANTY EXTENSION HAS BEEN ISSUED TO COVER REPAIRS. MODEL 2008-2013 ACCORD V6, CROSSTOUR V6, ODYSSEY, PILOT. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.