# Service bulletin A18\-086

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: 10145029
- Published by NHTSA: 2018\-10\-01
- Manufacturer's number: A18\-086
- Manufacturer's date: 2018\-09\-03
- NHTSA component: EQUIPMENT; ENGINE

## NHTSA's summary

Service bulletin \- Some troubleshooting procedures for a loss of communication or F\-CAN malfunction DTC?s require running the F\-CAN Bus Connected Unit Check using the i\-HDS. There are certain control units that may be reported as Not Available in the Status column even though they are properly communicating.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145029-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10145029-0001.pdf)

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

## Components

Engine, Equipment and accessories

## Vehicles listed

- 2018 to 2019 HONDA ODYSSEY
- 2019 HONDA RIDGELINE

## Recalls for the same vehicles and component

- [23V751000](/recalls/nhtsa/23V751000.md), 2023-11-13: ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
- [2023603](/recalls/tc/2023603.md), 2023-11-08: Engine
- [2020441](/recalls/tc/2020441.md), 2020-09-17: Accessories
- [19V298000](/recalls/nhtsa/19V298000.md), 2019-04-12: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS
- [2019179](/recalls/tc/2019179.md), 2019-04-11: Engine

## Other bulletins for the same vehicles and component

- [A23\-078](/bulletins/11019252.md), 2025-06-05, Service bulletin: ENGINE. Service Bulletin \- 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 transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Performance or Stuck OFF.
- [A23\-078](/bulletins/11019241.md), 2025-06-05, Service bulletin: ENGINE. Service Bulletin \- 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 transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Performance or Stuck OFF.
- [A23\-078](/bulletins/11017326.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.
- [ONL6AX022025A](/bulletins/11015008.md), 2025-03-05, Other: ENGINE. Owner Notification Letter \- Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.
- [A24\-085](/bulletins/11005272.md), 2024-07-26, Service bulletin: ENGINE. Service Bulletin \- MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather \(specifically near or below freezing temperatures\). Usually after a long drive \(around 2 hours\) and accelerating while cornering.
- [A24\-085](/bulletins/11002716.md), 2024-07-01, Service bulletin: ENGINE. Service Bulletin \- The MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather \(specifically near or below freezing temperatures\). Usually after a long drive \(around 2 hours\) and accelerating while cornering. Moisture accumulation in the intake manifold during long drives gets drawn into the combustion chamber while cornering, causing misfires.
- [A24040A](/bulletins/11000142.md), 2024-05-15, Other: ENGINE. Service NewsDue to On\-Board Diagnostic \(OBD\) regulation change starting with 2019 vehicles, American Honda’s Variable Valve Timing and Lift Electronic Control \(VTEC\) On\-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor Readiness status group. Due to some customer’s driving patterns, they may not drive in the fashion needed to operate the VTEC \(EGR/VVT\) that only operates above 5,350 rpm to run the OBD monitoring. Therefore, the EGR/VVT OBD monitor group readiness status is not set to “Complete” when the customer presents their vehicle to a Smog Check station for inspection.
- [ONL6AX01102024A](/bulletins/10248979.md), 2024-01-17, Service bulletin: ENGINE AND ENGINE COOLING. Owner Notification Letter \- Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.
- [A23\-091](/bulletins/10247623.md), 2023-12-23, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Service Bulletin \- Due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 \(Evaporative Emission \(EVAP\) System Purge Flow Malfunction\).

JSON: [/v1/bulletins/10145029](/v1/bulletins/10145029)

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