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Service bulletins for the 2012 Honda Odyssey

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.

133 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
A13-0812020-10-14. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - American Honda announced a powertrain warranty extension in 2013 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.
DOR-M9J4S-072020-07-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
DOR-M3J3F-072020-07-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
A20-0232020-03-11. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The front rocker arm oil control valve is leaking.
A13-0812019-06-25. Service bulletin. 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. 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. This 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 title under any state's law.
A13-0812019-01-05. 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."
A13-0812018-07-02. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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.
A13-0812018-05-14. 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 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. 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 through P0304 and cause the MIL to come on.
A13-0812018-03-05. 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 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.
A13-0812017-06-30. Service bulletin. ENGINE; EQUIPMENT:MECHANICAL. 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. 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.
ATS1607152017-06-19. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. TECHLINE SUMMARY ARTICLE - IF THE ENGINE IS OVERHEATING AND THERE’S ENGINE OIL MIXED IN THE COOLANT RESERVOIR, CHANCES ARE THE CYLINDER HEAD MAY BE CRACKED. A CRACK MAY FORM UNDER THE FRONT AND/OR REAR CAMSHAFT AT THE JOURNALS AND IS A RARE OCCURRENCE.
A13-0812017-05-19. Service bulletin. ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). "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."
A13-0952017-05-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE); EQUIPMENT. SERVICE BULLETIN - THE MIL COMES ON WITH DTC P0404 (EGR VALVE CIRCUIT RANGE/PERFORMANCE PROBLEM) RESULTING FROM EXTENDED DRIVING, THE PCM MAY COMMAND EXCESSIVELY HIGH LIFT EGR VALUES THAT MAY DAMAGE AN INTERNAL COMPONENT IN THE EGR VALVE.
WE - A13-0812017-05-16. Service bulletin. 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."
WE - A13-0812017-05-16. Service bulletin. ENGINE; POWER TRAIN. "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."
WE - A13-0812017-05-15. 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.
ATS1607152016-12-28. Service bulletin. ENGINE. "TECHLINE SUMMARY ARTICLE - IF THE ENGINE IS OVERHEATING AND THERE’S ENGINE OIL MIXED IN THE COOLANT RESERVOIR, CHANCES ARE THE CYLINDER HEAD MAY BE CRACKED. A CRACK MAY FORM UNDER THE FRONT AND/OR REAR CAMSHAFT AT THE JOURNALS AND IS A RARE OCCURRENCE. YOU CAN SEE THIS CRACK FROM VISUAL INSPECTION. IT CAUSES ENGINE OIL TO ENTER THE COOLING SYSTEM AND COOLANT TO ENTER THE ENGINE LUBRICATION SYSTEM. REPLACE THE CYLINDER HEAD IF YOU FIND IT’S CRACKED."
ATS1607152016-11-21. Service bulletin. ENGINE. "TECHLINE SUMMARY ARTICLE - IF THE ENGINE IS OVERHEATING AND THERE’S ENGINE OIL MIXED IN THE COOLANT RESERVOIR, CHANCES ARE THE CYLINDER HEAD MAY BE CRACKED. A CRACK MAY FORM UNDER THE FRONT AND/OR REAR CAMSHAFT AT THE JOURNALS AND IS A RARE OCCURRENCE. YOU CAN SEE THIS CRACK FROM VISUAL INSPECTION. IT CAUSES ENGINE OIL TO ENTER THE COOLING SYSTEM AND COOLANT TO ENTER THE ENGINE LUBRICATION SYSTEM."
A16060H2016-11-16. Service bulletin. ENGINE. SERVICE NEWS ARTICLE - WHILE DRIVING UNDER STEADY CRUISE (BETWEEN 30 AND 65 MPH) OR LIGHT ACCELERATION, DOES THE ENGINE INTERMITTENTLY RATTLE OR RUNS ROUGH WITH THE MIL BLINKING? SINCE THESE DRIVING CONDITIONS ARE LIKELY TO ACTIVATE VCM OPERATION, THE PROBABLE REASON FOR THESE SYMPTOMS IS STICKING VCM ROCKER ARMS.
A13-0812016-11-04. 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.
IN-20132014-01-09. Service bulletin. ENGINE. HONDA: AN INVESTIGATION ON SOME VEHICLES REGARDING AN OIL LEAK AT THE ENGINE'S B-CAP SIDE BOLTS. MODEL 2010-2012 ODYSSEY, PILOT, RIDGELINE. *PE
SB-13-0812013-11-23. Service bulletin. POWER TRAIN; ENGINE. HONDA: POWERTRAIN WARRANTY HAS BEEN EXTENDED AS A RESULT OF A SETTLEMENT AND REPAIR AND DIAGNOSIS IS UNDER REVIEW. MODEL 2011-2013 ODYSSEY. *PE

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