# Service bulletin A25\-061

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: 11020085
- Published by NHTSA: 2025\-07\-02
- Manufacturer's number: A25\-061
- Manufacturer's date: 2025\-06\-17
- NHTSA component: ENGINE

## NHTSA's 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11020085-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11020085-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2013 to 2017 HONDA ODYSSEY

## 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\-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.
- [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.
- [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.
- [A23\-077](/bulletins/11017325.md), 2025-04-29, Service bulletin: ENGINE. Service Bulletin \- Torque converters may not have been manufactured to proper specifications. As a result, the lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock\-up piston. The reduced lock\-up clutch capacity results in the transmission indicator flashing “D” and set the DTC P0741 Torque Converter Clutch Performance or Stuck OFF.
- [AEBM04182025901](/bulletins/11017320.md), 2025-04-29, Other: ENGINE. Dealer Message \- Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock\-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock\-up piston. The reduced lock\-up clutch capacity results in the MIL not illuminating. “D” flashes and “Transmission Overheat” message appears setting DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.
- [ATI\&04082024901](/bulletins/10253295.md), 2024-04-17, Service bulletin: ENGINE AND ENGINE COOLING. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2014\-2017 Odysseys and 2014\-2015 Pilots with a customer complaint of the vehicle Check Engine Light \(CEL\) on with one or more of the DTC\(s\) listed below \(in Qualifiers\) stored. To better understand the cause of this condition, AHM would like to collect specific Information from the vehicle prior to you attempting a repair of any kind.
- [ATI\&03212024905](/bulletins/10252077.md), 2024-03-26, Service bulletin: ENGINE AND ENGINE COOLING. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2014\-2017 Odysseys and 2014\-2015 Pilots with a customer complaint of the vehicle Check Engine Light \(CEL\) on with one or more of the DTC\(s\) listed below \(in Qualifiers\) stored. To better understand the cause of this condition, AHM would like to collect specific Information from the vehicle prior to you attempting a repair of any kind.
- [ATI\&03192024902](/bulletins/10252074.md), 2024-03-26, Service bulletin: ENGINE AND ENGINE COOLING. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2014\-2017 Odysseys and 2014\-2015 Pilots with a customer complaint of the vehicle Check Engine Light \(CEL\) on with one or more of the DTC\(s\) listed below \(in Qualifiers\) stored. To better understand the cause of this condition, AHM would like to collect specific Information from the vehicle prior to you attempting a repair of any kind.

JSON: [/v1/bulletins/11020085](/v1/bulletins/11020085)

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