Blower motor maybe, but code B1421?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by GreenMeanie, Jan 25, 2026 at 11:44 PM.

  1. GreenMeanie

    GreenMeanie Junior Member

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    My 2006 with 113k is not putting out any air from the vents at all. Neither heat nor cold nor defrost. It was making strange sounds a couple of weeks ago, and now I realize that nothing at all is coming out, no matter what the temperature is set to. Code B1421 comes up, but it says that's to do with the sun sensor. To me, it seems like the blower won't blow anything. Not sure how that has anything to do with the sun sensor. Thoughts?
     
    #1 GreenMeanie, Jan 25, 2026 at 11:44 PM
  2. ChapmanF

    ChapmanF Senior Member

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    Two different things. You have some problem with your blower and no code for it (that's not shocking, even modern cars with obd still can have things go wrong that don't set codes), and, unrelated to that, you have B1421.

    B1421 isn't quite any 'trouble' code really, just a tool for you to know whether the dash solar sensor works. If you have B1421 in the dark or the shade, and you don't have it in bright sun, the sensor works.
     
    #2 ChapmanF, Jan 26, 2026 at 1:28 AM
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