I’ve been fighting the P3004-131 code for months after I bought and probably installed incorrectly some new batteries from “NewPriusBatteries.com” you know the “D cell” looking ones not the Panasonic ones. Well long, long, long story short, I had the p.o.s. Towed to my mechanic who knows Hybrids (so he said) and after realizing that I forgot a cable, he re-installed the batteries and the pack. Well, it threw the aforementioned code, and won’t run. When you power on the car, the first time, no “red triangle”, just won’t start the engine, you hit the power button again, and the “red triangle of death” shows up. He’s gone over everything. Maybe the ECU in the pack is bad due to my negligence in not putting a cable on correctly. I don’t f’n know. All I know is I GIVE UP... Anyone is the Reno, NV area want some batteries for a lot less than I paid for them? Want a “Parts car”? ‘07 . That I thought I could get running. Craigslist here I come. Oh, it has a brand new 12v battery as well. “AS-IS - Where IS”.