Prius 2009 165k mile error P0A92

Do you know for sure that is the code?
Do you have your own scanner.

Here is a blog post details from Luscious Garage
Gen 2 Prius (2004-2009) Transmission Failure, P0AA6, P0A92, P0A7A - Luscious Garage | Hybrid Specialists

 

Sounds like someone is gonna need a new transmission.

 

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You may need a hybrid compatible OBD2 scanner to pull the secondary codes (INF) for the above DTC P0A92, it will help localize the issue.

Here are the workups for DTC P0a92 and INF subcodes (261/521/606) :

https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21bpm/0a92261.pdf

https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21bpm/0a92521.pdf

https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21bpm/0a92606.pdf

 

Many choose the 'mini-vci' cable with techstream, costs around $20 online.

What type of symptoms are you experiencing ?

 

Could likely be the transaxle

Here is another (old) thread here on Priuschat.
Major Failures--2005 Prius | PriusChat