Discussion:
H1 Code

Hello everyone,

I have a Toyota 8HBW23, one of three units recently received. On this particular unit, if you switch directions quickly, it honks, throws a red H1 code, and continues switching directions.

The other two units are not exhibiting this behavior.

Has anyone experienced this issue before or know what the H1 code indicates and where I should start looking?

Any insight would be greatly appreciated.
  • Posted 16 Oct 2025 10:02
  • By RPugh
  • joined 16 Oct'25 - 1 message
  • Arizona, United States

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