The mode changes between ACCESSORY and ON, but it is difficult to change to OFF
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2025 Honda Odyssey, 2024 Honda Odyssey, 2023 Honda Odyssey, 2022 Honda Odyssey, and 2021 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic procedure
- Check the body control module
- Check the gauge control module
- Check the TCM
Also check for
- Gauge control module
- Body control module
- PCM
- B-CAN communication line open/short
- F-CAN communication line open/short
- Speed signal line open
- TCM