P0A94 diagnosis/inverter replaced

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by subpar7985, Apr 15, 2026 at 7:05 AM.

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  1. subpar7985

    subpar7985 New Member

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    2013 Prius c
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    Hello I have a 2013 Prius C. When I was driving it, it shut off the ICE, said "check hybrid system" and continued for a short distance on EV power. I ran the codes and found P0A94 (my reader doesn't do more detail than that) which combined with gas mileage reducing over the past few months lead me to believe I had a bad inverter. So I got a used inverter, from a car which matched my 7th & 8th digit of my VIN, and replaced it.

    The car still throws P0A94 (though it shows up as historic, possibly because I told my scanner to clear the computer because I thought that might reset things?), still says "check hybrid system", and still doesn't go to 'ready'.

    How do I figure out what part I need to replace?
     
    #1 subpar7985, Apr 15, 2026 at 7:05 AM
  2. ChapmanF

    ChapmanF Senior Member

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    A code showing up as 'historic' ought not to be causing a "check hybrid system" warning or preventing the car going READY. At least my first and second guesses would be that there is another code that is not 'historic'. But at the moment I don't have a guess as to why your scan tool hasn't shown it.
     
    #2 ChapmanF, Apr 15, 2026 at 9:55 AM
    Brian1954 likes this.
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