TSB's

Misfiring Honda Accord

This TSB applies to 2008-2010 Accord V6 with A/T, 2011 Accord V6 with A/T from VIN 1HGC….BA000001 through 1HGC….BA005824, 2010 Accord Crosstour, 2011 Accord Crosstour 2WD from VIN 5J6TF1H5.BL000001 through 5J6TF1H5.BL001719, and 2011 Accord Crosstour 4WD, from VIN 5J6TF2H5.BL000001 through 5J6TF2H5.BL003438.

One or more spark plugs may be fouled, and the MIL illuminates with at least one of the following DTCs:

* P0300 (random cylinder misfire detected)

* P0301, P0302, P0303 or P0304 (No. 1 through 4 cylinder misfire detected)

Under SOFTWARE INFORMATION, the software version and program information were changed. Update the PCM and replace any fouled spark plugs.

SPARK PLUGS

P/N 12290-R70-A01 (except PZEV).

P/N 12290-R71-L01 (PZEV).

SOFTWARE INFORMATION

HDS software version 2.024.009 or later.

HDS Control Module (CM) update: Database Update 29-NOV-2010 or later.

NOTE: To avoid an incorrect repair, use the software version listed above or a later version.

The update PGM-Fl software program IDs and P/Ns are listed below. If the HDS or MVCI is loaded with the latest software, and it displays No Update Needed during the update, the software for this service bulletin is already installed.

YEAR/MODEL: 2008-2009 Accord (KA-ULEV)

PROGRAM ID: 70A630

PROGRAM P/N: 37805-R70-A63 (or later)

YEAR/MODEL: 2008-2009 Accord (KL-SULEV-PZEV)

PROGRAM ID: 71L630

PROGRAM P/N: 37805-R71-L63 (or later)

YEAR/MODEL: 2010 Accord (KA-ULEV)

PROGRAM ID: 70A750

PROGRAM P/N: 37805-R70-A75 (or later)

YEAR/MODEL: 2011 Accord 2-door (KA-ULEV)

PROGRAM ID: 70A830

PROGRAM P/N: 37805-R70-A83 (or later)

YEAR/MODEL: 2011 Accord 4-door (KA-ULEV)

PROGRAM ID: 84A530

PROGRAM P/N: 37805-R84-A53 (or later)

YEAR/MODEL: 2010 Accord Crosstour (2WD)

PROGRAM ID: BRA560

PROGRAM P/N: 37805-RBR-A56 (or later)

YEAR/MODEL: 2010 Accord Crosstour (4WD)

PROGRAM ID: BRA060

PROGRAM P/N: 37805-RBR-A06 (or later)

YEAR/MODEL: 2011 Accord Crosstour (2WD)

PROGRAM ID: BRA720

PROGRAM P/N: 37805-RBR-A72 (or later)

YEAR/MODEL: 2011 Accord Crosstour (4WD)

PROGRAM ID: BRA220

PROGRAM P/N: 37805-RBR-A22 (or later)

DIAGNOSIS

Inspect the Freeze Data or On Board Snapshot data using the HDS for DTCs P0300, P0301, P0302, P0303 or P0304, and inspect the spark plugs in cylinders 1 through 4 for carbon buildup. If at least one of the listed DTCs is present, and at least one spark plug is fouled, go to the Repair Procedure.

Inspect all spark plugs for fouling/deposits.
<p>Inspect all spark plugs for fouling/deposits.</p>

 REPAIR PROCEDURE

1. Replace any fouled spark plugs. Torque the plugs to 16 ft.-lbs. (22 Nm).

2. Update the PGM-Fl software with the HDS.

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