Torque OBD reader shows HV battery charging at 14kw

Torque OBD reader shows HV battery charging at 14kw but also shows the 14 cell blocks to be around 16 volts- it shows 15v in the photo as I had the headlights and ac on and the ice had not yet started to charge.

A few days ago the triangle of death among other warning lights were all showing on the dash and the car would not go into gear.

I took the Prius out of service and transferred the tag and insurance to my back-up car the 300M so I can take care of the Prius without any pressure to hurry.

If I unhooked the 12volt for 30 minutes or so the prius would start and go into gear - but if I turned the car off and restarted the same issues would come back on restart.

Now two days later everything seems fine except that the obd reader shows the HV battery only charging at 14KW and I am under the impression the charge should be more like 30KW.

Before the trouble started I had been away on a motorcycle trip and the car sat for several days and it had been raining for a solid 20 hours as well. (I had read about the blue wire in the fuse box under hood which can get a bad connection and cause a 2nd gen prius not to go into gear - and the you-tuber who's video I was watching claimed this mostly happened to him during rainy times)

Any thoughts?

 

- There is only 233,500 miles on this 2007 : )

- 12 volt is a 6 month old OEM Toyota and reads at 14v with car running and 12.8 with independent volt meter. (Original 12v lasted 12 years and was still working but getting weak so i replaced it with OEM)

- No fault codes at all show on Torque.

The car seems to be behaving OK right now except I don't know what caused all the issues that lasted for a couple of days and also the 14kw HV charge seems low. I did take the car off the road and removed the insurance and moved the tag to my Chrysler 300M but I can drive the Prius around my backyard.

- One thought I have is to clean all the electrical contacts in the fuse box under the hood. (I have a hobby of restoring old motorcycles and do this to all the electrical connections but it's much easier on a 35 to 45 year old motorcycle than a Hybird car : )

 

The thought did occur to me that perhaps while at idle or sitting still the HV battery may not charge at the higher KW rates.

 

Thanks for the info - I'll get the Dr. Prius app and go from there.

 

I did get the App Prius Doctor but after unhooking the 12 volt and rehooking the next day there are no codes showing on either Dr. Prius and Torque. However, there are issues.

When I put the car in Drive I get a warning to "put the car in Park" and also the Red Death light. Then If I put the car in reverse the warnings and lights go away.

 

StrawBrad - Yep, shutting the door took care of that last issue.........

Currently - everything seems fine, yet previous symptoms are exactly like the high voltage leak that you pointed out. I'll continue to start the car and let it run at home and see if the symptoms return and if so check for error codes again and also do the HV leak test.

Thanks!

 

Yes, I have to wait till it fails again and acts-up.... right now it's staying on the "runs fine" steps so........now it's an "intermittent" style electrical problem. I'll keep it at home till I sort it out

 

StrawBrad - yep I got the P0AA6 code again and see there are several areas that could be causing the HV Drain Code.

Thus if I take the steps in the video - one of which is pulling the HV fuse - pulling the fuse and then testing will isolate the HV battery from the other possible drains such as AC compressor and transmission as possible drain failure points?

Thus if I find a drain using the method in the video ....... it's the best option which is a leaky cell in the HV battery. If I do not find a drain then my HV drain and P0AA6 code is a worse case where I may have to "Shoot the Horse" and sell for Glue - so to speak : )

 

I used the Dr. Prius app and it gave the P0AA6 code.

Sometime in the next week or two I'll find the time to check the battery. Thanks for the clear info.