Prius White 2002 Red Triangle

Shoot over to hybrid doctor in VA . AB will fix you up nicely Ive his number . Ring me up if ya like I gotta folks in Bethesda 9198920363

 

The four codes your scan tool didn't know the meaning of are:

P3006 - the charge state is uneven across the battery modules (this you knew already from the first two codes the tool recognized)

P3029 - internal resistance of block 19 is abnormal

P3130 - some malfunction in the pump/cooling system for the inverter/converter electronics

P3125 - some problem with the inverter/converter electronics

P3125 is a very general code, with something like 81 possible subcodes that a suitable scan tool can read. Without the subcodes, it is pretty vague. But given the P3130, it is possible the problem was secondary to bad cooling and will be resolved by fixing that.

The P3130 does have two different subcodes, which will tell you whether the ECU thinks it's more like the cooling problem has to do with the pump or with the radiator fans.

 

Expensive, time for a new HV battery, but if all else is working, worth it. New Toyota battery is best, and they've really come down in price. Aftermarket rebuilt batters are a bit cheaper, but my experience is they're only as good as their warranty, one or two years.

 

For me the answer is yes. My '01 has relatively low 145k miles, and with the new Toyota HV battery and regular maintenance, I expect to get another six to ten years out of it. It'll be a real antique by then.

 

That's an 8 K car et now 145K on a prius looking good . Dummies are paying that for gen2 w 190K ready for ABS failures they may not be able to buy out of!

 

P3130 346 is specific to the inverter cooling water pump or wiring that serves it.

P3125 322 reflects overheating of the inverter section for MG1.

 

If you don't hear that little pump running and see water moving in the pink colored reservoir next to the silver covered inverter on the right hand side of your engine compartment if you undo that cap and water's not moving a little bit you should see it you should order a water pump online an attempt to put it on with a long set of needle nose pliers a quarter drive 10 mm socket a long extension and thinking about it for a minute and there's tons of videos it's a very easy repair even for a desk jockey really simple the minute you put in that new pump and fill up that reservoir and push the button on the car that pump's going to start to run suck the reservoir down a little at which point you'll add it up to the full line or close to it and that'll be the end of that until it goes bad again make sure the fuses that correspond to that are up to snuff

 

Yes, a causal relationship between the P3130 346 and the P3125 322 is not a big stretch.

If you're at all handy, I would suggest picking up the pump at the dealer and a jug of SLLC and changing it yourself; it's a pretty straightforward job. (That might be what Tombukt2 was saying, too; I can't quite tell.)