Service Bulletin

13-081

October 8, 2020

Version 19

Warranty Extension: MIL Comes On with DTCs P0301 thru P0304
Supersedes 13-081, dated June 18, 2019, to revise the information highlighted in yellow.

AFFECTED VEHICLES
Year

Model

Trim Level

VIN Range

2011-13

Odyssey

ALL

Check the iN VIN status for eligibility.

REVISION SUMMARY
Under CUSTOMER NOTIFICATION, outdated information was removed.

CORRECTIVE ACTION
2011 Models: Complete diagnosis procedure and if necessary, update PCM software (Procedure A), replace affected
spark plugs then clean pistons and replace the piston rings (Procedure B).
2012–13 Models: Complete diagnosis procedure, replace affected spark plugs then clean the pistons and replace the
pistons rings (Procedure B). No need for software update as 2012–13 model vehicles are equipped with updated
software from factory.

BACKGROUND
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.
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.
Additionally, the following videos are available to help with this bulletin:
•

Tech2Tech "How to Clean Piston Ring Grooves"

•

Tech2Tech "Let's Talk Spring Compressors"

•

Tech2Tech "Cylinder Wall Inspection Tool "

CUSTOMER INFORMATION:The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Honda automobile dealer.
©

2020 American Honda Motor Co., Inc. — All Rights Reserved

Page 1 of 32

CUSTOMER NOTIFICATION
Owners of affected vehicles were sent a class action settlement notice regarding this warranty extension starting in
October 2013.
Before doing work on a vehicle, verify its eligibility by doing an iN VIN status inquiry.
DIAGNOSIS
1. Connect the HDS and check for the following 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.
Are any of these DTCs stored?
YES – Go to step 2.
NO – Stop. This bulletin does not apply. Continue with normal troubleshooting.
2. Remove and check the spark plug(s) on the affected cylinders (example: if P0301 is stored, check the spark plug on
cylinder No. 1).
Are the spark plug(s) fouled?
YES – Proceed to Step 3.
NO – Stop. This bulletin does not apply. Continue with normal troubleshooting.

Page 2 of 32

3. For 2011 Odyssey only: Check the PCM software version P/N located above the PGM FI Data List.

Year/Model

Program ID (or later)

Program P/N (or later)

2011 Odyssey (5-speed A/T)*

V0A560

37805-RV0-A56

2011 Odyssey (5-speed A/T)**

V0A240

37805-RV0-A24

2011 Odyssey (6-speed A/T)*

V0A760

37805-RV0-A76

2011 Odyssey (6-speed A/T)**

V04250

37805-RV0-425

V0A360

37805-RV0-A36

(VIN before 5FNRL5…BB056992)
2011 Odyssey (6-speed A/T)**
(VIN including 5FNRL5…BB056992
and after)
2012–13 Odyssey (ALL)

Software Updated from Factory

*With Keihin PCM
**With Continental PCM
Is the PCM Program ID and/or Program P/N the same or newer than what is listed above, 2011 model years only?
NO – The PCM software needs to be updated. Go to REPAIR PROCEDURE A to do the software update, then go to
step 4.
YES – The correct software is installed. The piston rings on select cylinders need to be replaced. Go to step 4.

Page 3 of 32

4. Note which DTCs are stored in the vehicle.
Does the vehicle have DTC P0304 stored? (Any combination of DTCs P0301, P0302, P0303, P0304 may also be
stored.)
YES – Go to REPAIR PROCEDURE B for the cylinders listed, Cylinders 1–4: Clean the pistons, replace the piston
rings, and replace the spark plugs.
NO – Go to REPAIR PROCEDURE B for the cylinders listed below:
•

Cylinder 1–3: Clean the pistons and replace the piston rings.

•

Cylinder 1–4: Replace the spark plugs.

WARRANTY CLAIM INFORMATION
PROCEDURE NOTICE: 2011 Models, confirm PCM software is or has been updated with the correct version
(Procedure A). Then piston cleaning, piston ring and spark plug replacement should be done (Procedure B). Failure
to follow this process correctly may result in a full debit of the warranty claim to your dealer.
2012–13 Models: Are equipped with updated software from the factory, no software update is needed. Piston cleaning,
piston ring replacement along with the spark plugs should be performed (Procedure B).
FLAT RATE NOTE: The procedure in this bulletin is different than the service manual. This procedure does not require
the complete removal of the power steering pump, catalytic converter(s), engine and transmission, or the crankshaft. As
a result, the operation number is unique and the FRT is reduced (Procedure B).
Operation
Number

Description

Flat Rate
Time

Defect
Code

Symptom
Code

Failed Part Number

1171H2

2011–13 Odyssey:
Procedure B

8.5 hrs

5V500

JB900

13011-5G0-A01

5V500

JB900

13011–5G0–A01

5V500

JB900

13011–5G0–A01

Replace piston rings 1–3
and replaced spark plugs
1–4 (includes diagnosis).
1171H2A

2011 Odyssey: Procedure 0.1 hr
A
Add to update the PCM on
2011 Odyssey only.

1171H2B

2011–13 Odyssey: Add if
replacing piston rings on
cylinder 4.

0.8 hr

Skill Level: Repair Technician

Page 4 of 32

PARTS INFORMATION A
There are no parts needed for REPAIR PROCEDURE A because it is a software update only.

PARTS INFORMATION - PISTON CLEANING AND RING REPLACEMENT
Part Name

Part Number

Cyl 1-3

Cyl 1-4

Cyl. Gasket (Fr)

12251-R70-A01

Cyl. Gasket (Rr)

12261-R70-A01

1

1

Drain Washer 14 mm

94109-14000

1

1

EGR Pipe Gasket A

18716-R70-A01

1

1

EGR Pipe Gasket B

18719-R70-A01

1

1

Ex. Chamber Gasket

18115-R70-A01

1

2

Ex. Pipe Gasket

18212-SA7-003

2

2

Head Gasket Fr. (Valve Cover)

12030-R70-A00

Head Gasket Rr. (Valve Cover)

12050-R70-A00

1

1

In. Manifold Gasket (Intake Top Cover)

17146-R70-A01

1

1

In. Manifold Gasket (In. Manifold to Base)

17105-RCJ-A01

1

1

Oil Filter

15400-PLM-A02

1

1

O-ring (7.47 mm x 3.6 mm)

91301-PLC-000

2

2

O-ring (31.2 mm x 4.1 mm)

91314-PH7-003

2

2

Piston Ring Set

13011-R70-A12

3

4

Pre-chamber Gasket

18393-SDB-A00

1

1

Self-locking Nut (8 mm)

90212-RCA-A01

4

8

Self-locking Nut (10 mm)

90212–SA5-003

9

9

Spark Plug

12290-R71-L01

4

4

Strainer O-ring

15221-RYE-A01

1

1

Timing Belt Bolt

14551-RCA-A01

1

1

Water Gasket Fr.

19411-P8A-A03

1

1

Water Gasket Rr.

19412–P8A-A02

1

1

1

1

Page 5 of 32

Replace Parts as Needed for Repair Procedure B
Part Name

Part Number

Cyl 1-3

Cyl 1-4

Connecting Rod Bolt (may require up to 2
bolts per connecting rod)

13204–P8A–A01

6

8

Washer-Bolt (12 x 163) (may require up to 90005–PAA–A01
8 bolts per cylinder head)

8

16

REQUIRED MATERIALS - REPAIR PROCEDURE B
Material Description

Part Number

Quantity

Honda Long-Life Antifreeze/Coolant Type 2

0L999–9011

3 gallons

Full Synthetic Engine Oil 0W-20 Oil

08798–9063

6 quarts

Hondabond HT (1 Tube Repairs 5 Vehicles)

08718–0004

1 tube

Genuine Honda Throttle Plate Cleaner

08700–9204

Nylon Parts Cleaning Brush

(commercially available)

5/16 ID Flexible Hose