Inverter going bad

I can't see why your inverter would fail, probably a false diagnostic. A used one on Ebay would run around $300.

There's a recall on the inverter pump, that probably is the issue....not the inverter itself.

 

If it really is the inverter, find one from a local junkyard using this engine:

Car-Part.com--Used Auto Parts Market

It should be listed under part 'Hybrid Converter/Inverter'

Cost should be around $300, some are under $200. They rarely fail so a used inverter is fine!

Make sure the mechanic first unhooks 12 volt battery, then remove hybrid battery safety plug.
Coolant will be lost and needs to be bled properly also, very important!

 

I didn't know a failed inverter can be reset and you can be on your way again.

 

welcome! call toyota, and ask for a goodwill warranty. they're pretty good about it when you so close and low miles. all the best!

 

That code points to a malfunction in one of two relays in the engine compartment relay block. There may be more codes or other issues the mechanic saw to come up with an inverter diagnosis, but given that code I would certainly try replacing the "B" integration relay first.

 

Absolutely. The other possibility is that one of the traction battery main relays failed, but if that were the case then the car would not be drivable.

Especially since 1) it is not obvious that the inverter is at fault given the DTC you reported, and 2) a used inverter can be purchased for a low three-digit figure.

 

if it does come down to the inverter, a cheap and easy solution is salvage, as mentioned above.

 

That relay is basically what turns the Inverter on hence the IGCT which is the power semiconductor system the Inverter uses.
That relay is controlled by the Hybrid Vehicle Control ECU. That ECU tells the relay to turn on and it provides the 12 volt turn on leg to the Inverter and the Inverter fires up.
The 12 volt through that relay comes from a yellow 20 Amp Fuse Labeled HEV.

Its an interesting code as we have not seen alot of those. The relay is located in the C Block portion of the fuse assy under the hood and on the drivers side in the black plastic box. I have never pulled the B or C block covers apart but apparently the relays are buried underneath there. Looks like a job to get in there. You can see the yellow 20 amp HEV fuse its on the right about 4 inches down. The block its sitting in is the C Block. Right below it is a white plastic courtesy fuse puller.