[Grease23]

My only code since I bought this car is this one. If I erase it, it comes back. The battery is AGM, I can't read the capacity without pulling it out, but it appears to be 8 years old. All wires appear to be hooked up.

If I get back from a long drive, the battery reads around 12.4 - 12.5 volts under the hood. If I do a load test on the under-hood terminals it passes with flying colors.

Car runs great at all times.

How do I fix this? Do I need to fix this?

Thanks.