# Service bulletin Service Bulletin

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.

- Type: Service bulletin
- NHTSA id: 10128532
- Published by NHTSA: 2018\-02\-12
- Manufacturer's number: Service Bulletin
- Manufacturer's date: 2014\-08\-05
- NHTSA component: ENGINE

## NHTSA's summary

Service bulletin \- The MIL comes on with one or more misfire DTC\(s\) P0301 thru P0304 \(Number 1\-4 cylinder misfire detected\). DTC P3400 \(rocker arm oil pressure switch B\) and/or P3497 \(rocker arm oil pressure switch C\) may also be stored.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2014/MC-10128532-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2014/MC-10128532-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Trouble codes named

P0301, P0304, P3400, P3497

## Vehicles listed

- 2013 HONDA ODYSSEY
- 2013 HONDA PILOT

## Recalls for the same vehicles and component

- [13V382000](/recalls/nhtsa/13V382000.md), 2013-08-27: ENGINE

## Other bulletins for the same vehicles and component

- [A26\-002](/bulletins/11028516.md), 2026-02-06, Service bulletin: ENGINE. 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.
- [A26\-001](/bulletins/11028515.md), 2026-02-06, Service bulletin: ENGINE. 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.
- [A25\-061](/bulletins/11022768.md), 2025-09-05, Service bulletin: ENGINE. 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.
- [A25\-060](/bulletins/11022767.md), 2025-09-05, Service bulletin: ENGINE. Service Bulletin \- The piston ring function deteriorates due to ring wear and sticking from sludge. Oil from the crankcase 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.
- [ONL6Z6072025](/bulletins/11021759.md), 2025-08-08, Other: ENGINE. Owner Notification Letter \- the piston ring function can deteriorate 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 Malfunction Indicator Lamp \(MIL\) to come on.
- [A25\-061](/bulletins/11020825.md), 2025-07-23, Service bulletin: ENGINE. Service Bulletin \- The piston ring function deteriorates due to ring wear and sticking from sludge. Oil from the crankcase 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.
- [A25\-060](/bulletins/11020824.md), 2025-07-23, Service bulletin: ENGINE. 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.
- [AEBM06172025901](/bulletins/11020087.md), 2025-07-02, Other: ENGINE. Dealer Message \- Piston ring effectiveness may be reduced due to excessive wear and oil sludge build\-up, which can cause oil to adhere to the spark plug, potentially leading to carbon fouling and misfire triggering DTCs P0301 through P0304 and cause the MIL to come on.
- [A25\-061](/bulletins/11020085.md), 2025-07-02, Service bulletin: ENGINE. 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.
- [A25\-060](/bulletins/11020084.md), 2025-07-02, Service bulletin: ENGINE. 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.

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