NHTSA ID Number: 11028516
Manufacturer Communication Number: A26-002
TSB/Document Date: 2026-02-06
Summary
Service Bulletin - The piston ring function deteriorates due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire. 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.
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TSB/Document ID: A26-002
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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Quantity
Part Name
Part Number
Cyl 1-3
Cyl 1-4
Timing Belt Bolt
14551-RCA-A01
1
1
Water Gasket Fr.
19411-P8A-A03
1
1
Water Gasket Rr.
19412–P8A-A02
1
1
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 8
bolts per cylinder head)
90005–PAA–A01
8
16
Replace Parts as Needed for Repair Procedure A
Part Name
Repair Procedure B - Engine Short Block Replacement
Part Name
Part Number
Quantity
Intake Cover Gasket
17146-R70-A01
1
Intake Manif old Gasket
17105-RCJ-A01
1
Water Gasket Fr.
19411-P8A-A03
1
Water Gasket Rr.
19412–P8A-A02
1
18115-R70-A01 or
18115-5G0-A01
2
15400-PLM-A02
1
Nut, Self -Locking (catalytic converter)
90212-RCA-A01
8
Washer, Sealing (24MM) (6AT Fill Plug Washer)
11107-PWA-300
1
Washer, Drain Plug (18MM) (6AT Drain Plug Washer)
90471-PX4-000
1
Washer, Drain Plug (20MM) (5AT Drain Plug Washer)
94109-20000
1
Gasket, Prechamber
18393-SDB-A00
1
Gasket, Exhaust Pipe
18212-SA7-003
2
Nut, Self -Lock (10MM) (Exhaust pipe A nuts)
90212-SA5-003
9
Bolt, Flange (side mount bolt to f rame bracket)
90163-SDA-A01
2
Catalytic Converter Gasket
Page 5 of 109
Repair Procedure B - Engine Short Block Replacement – cont.
Bolt, Flange (side engine mount bolts)
90164-SHJ-A00
2
Bolt, Flange (12X115) (side engine mount bolt)
90161-SZA-A00
1
90163-S5A-000
8
90371-SAA-010
4
Bolt, Flange (10X75) (Rear engine mount bolts)
95701-10075-08
2
O-Ring (8.8X2.4)
15142-P8A-A00
2
Bolt, Flange (10X50)
95701-10050-08
4
90163-SDB-A00
3
90163-SHJ-A00
4
Bolt, Flange (10X85) (Select)
90002-R70-A00
1
Bolt, Flange (10X120)
95801-10120-08
2
O-Ring (14.4X1.9) (P.S Line)
91370-TA0-000
1
91301-PLC-000
2
Starter Motor Gasket
31270-RJA-A01
1
Gasket A, EGR Pipe (EGR pipe gasket)
18716-R70-A01
1
Gasket B, EGR Pipe (EGR pipe gasket)
18719-R70-A01
1
Gasket, Rear Cylinder (head gasket)
12261-R70-A01
1
Gasket, Front Cylinder (head gasket)
12251-R70-A01
1
Head Gasket Fr. (Valve Cover)
12030-R70-A00
1
Head Gasket Rr. (Valve Cover)
12050-R70-A00
1
O-Ring (O-rings f or coolant pipe)
91314-PH7-003
2
Timing Belt Bolt
14551-RCA-A01
1
Bolt, Timing Belt Adjuster
14513-RCA-A01
1
Bolt, Flange (strut to knuckle)
90119-SJC-A00
4
Nut, Flange (strut to knuckle)
90381-SJC-A00
4
Bolt, Flange (10X25) (Propeller Shaf t)
90113-S3V-A00
4
Bolt, Flange (special bolt, subf rame)
90165-SHJ-A00
4
Bolt, Flange (special bolt; rear subf rame bolt)
90161-SHJ-A00
2
Bolt, Flange (10X20) (Front & Rear engine mount
bolts)
Nut, Flange (12MM) (Front & Rear Engine Mount
stopper nuts)
Bolt, Flange (10X30) (Front engine mount bracket
bolts)
Bolt, Flange (12X83) (Rear engine mount bracket
bolts)
Page 6 of 109
Repair Procedure B - Engine Short Block Replacement – cont.
Bolt, Flange (12X28) (subf rame bracket bolt)
90181-SK3-E00
2
91333-PNA-003
1
Engine Short Block
10002-RN0-305
1
Part Number
Quantity
90005–PAA–A01
16
Replace Parts as Needed for Repair Procedure B
Part Name
Washer-Bolt (12 x 163) (may require up to 8 bolts per
cylinder head)
REQUIRED MATERIALS
Repair Procedure A
Material Description
Part Number
Quantity
08CLA-P99-0F0A8
3 gallons
Full Synthetic Engine Oil 0W-20 Oil
08798–9163
6 quarts
Hondabond HT (1 Tube Repairs 5 Vehicles)
08718–0004
1 tube
Genuine Honda Throttle Plate Cleaner
08700–TPCB
1
Honda Long-Lif e Antif reeze/Coolant Type 2
Nylon Parts Cleaning Brush
(commercially available)
5/16 ID Flexible Hose
(commercially available)
Repair Procedure B
Material Description
Part Number
Quantity
08CLA-P99-0F0A8
3 gallons
Full Synthetic Engine Oil 0W-20 Oil
08798–9163
6 quarts
Power steering Fluid (12oz)
08206-9002
1
ATF-DW1
08200-9008
4
Hondabond HT (1 Tube Repairs 10 Vehicles)
08718–0004
1 tube
(commercially available)
1
Honda Long-Lif e Antif reeze/Coolant Type 2
5/16 ID Flexible Hose
Page 7 of 109
TOOL INFORMATION
Repair Procedure A
Tool Name
Tool Number
Quantity
Piston Ring Groove Cleaner
07AAZ–TA5A100
1
Cylinder Wall Inspection Tool
07AAJ-R70A301
1
LIL50210
1
Snap-On PRS8 or equivalent
1
SCP1289 or equivalent
1
Tool Number
Quantity
KLS6227500
1
07AAJ-R70A301
1
Engine hoist
NRI78106A or equivalent
1
Load leveler
NRI78115H
1
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