Hybrid System malfunction codes c1310 and c1259?

2010 TOYOTA PRIUS
180,000 MILES • AUTOMATIC • HYBRID
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FLORANG2123
  • MEMBER
  • 11 POSTS
I got the codes c1310 and c1259. I checked the cells, the wires around the battery, the fan, and the 12V battery too. I can't seem to find the issue.
Aug 29, 2026 at 7:26 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,540 POSTS
Hello,

The C1259 code means the brake/skid-control ECU has been informed that there is a problem with the hybrid system that prevents normal regenerative braking.

C1310 means the brake/skid-control ECU has received a malfunction signal from the hybrid-control/power-management ECU.

These are common when the hybrid battery goes bad, here is a video to help you fix it, then clear the codes.

https://www.youtube.com/watch?v=-I2XlWgYXrk

Let me know what happens.



Aug 31, 2026 at 9:37 AM
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