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Honda Odyssey 21-25 support#1934

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mvl-boston wants to merge 88 commits intocommaai:masterfrom
mvl-boston:Odyssey_21_25
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Honda Odyssey 21-25 support#1934
mvl-boston wants to merge 88 commits intocommaai:masterfrom
mvl-boston:Odyssey_21_25

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@mvl-boston mvl-boston commented Mar 6, 2025

(simplified and resubmitted in pr 2170)

Add support for 2021 to 2025 Honda Odyssey

  • car fingerprint named 5G MMR. That is honda-speak for 5th generation mid-model refresh
  • US Odysseys use imperial speed/cruise units on the canbus, Canadian Odysseys use metric. Used hardcoded fingerprint names to support this per discord recommendation.
  • Odyssey removes steering when under 70kph with radar on (eg: when longitudinal is off). Identified the canbus flag that identifies the steering lockout, and set a low speed warning when this occurs.
  • regression on gas strength says that this model runs 1 m/s per 1000 gas units. Existing code has 1m/s per 800 units for Bosch. Unsure if this model is different (or other Bosch models are tuned wrong) so wrote logic that flips to 1000 units only for this fingerprint.
  • Completed tuning, and per request on Honda discord I limited all changes to the 5G Odyssey only.

Hardware: Comma 3x
Harness: Comma Honda Bosch A
Test route: 558ac87ada6a88cd/0000005b--0d40d84bb6

@github-actions github-actions bot added car related to opendbc/car/ honda labels Mar 6, 2025
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Thanks for contributing to opendbc! In order for us to review your PR as quickly as possible, check the following:

  • Convert your PR to a draft unless it's ready to review
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@mvl-boston mvl-boston changed the title Odyssey 21-25 support draft - Odyssey 21-25 support Mar 6, 2025
@mvl-boston mvl-boston marked this pull request as draft March 6, 2025 22:06
@mvl-boston
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Merged with changes in latest master, please let me know if anything further needed to upstream.

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Will clean this up similar to 2022 RDX

@mvl-boston mvl-boston closed this Apr 30, 2025
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