Will replacing the Hybrid battery fix codes P0A7A, P0A94 and P0A80?

Tiny
BULLSHITBIL
  • MEMBER
  • 2013 TOYOTA PRIUS
  • AUTOMATIC
  • 155,000 MILES
Hello, I’m looking for some advice about my hybrid system.

I have a Toyota Prius with about 155,000 miles. I scanned the car with an OBD2 scanner and found these permanent codes:
• P0A80
• P0A94
• P0A7A

Recently the dashboard stopped showing the hybrid battery bars and instead displays a message saying “Stop the vehicle in a safe place.” The car also seems to be in limp mode and won’t go much above ~40 mph.

From my research, P0A80 often indicates the hybrid battery pack is failing, and I’m considering replacing the battery myself. However, I’m not sure if the other two codes might indicate a separate issue with the inverter or generator.

My question is:

If I replace the hybrid battery pack, is it likely that these three codes will clear, or should I be diagnosing the inverter or other hybrid components first?

I’m comfortable doing the battery replacement myself, but I’d like to make sure I’m addressing the root cause before buying a replacement battery.

Any advice or diagnostic steps would be greatly appreciated. Thank you.
Sunday, March 8th, 2026 AT 7:49 PM

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