Let me be clear... i have no triangle of death. no codes are being thrown. car drives just fine. But these readings from Dr. Prius have me concerned. Any thoughts? Replaced ECU inside the hyburd battery because i thought it might have corrosion on the pins. Readings remained the same. 200k 2009 Prius no problems with car whatsoever but readings all of the sudden have become strange and worry me
Why would those readings be of any concern? They're not even possible. Believe your car, not the app.
what do you think would be causing the torque app and dr prius to give results like that? before the results have been normal. out of nowhere im getting these readings. any advice is appreciated.
Normally, when you see weird voltage readings like that, the No. 2 wire harness is compromised by corrosion with breaks in one or more of the sense wires. In this case, though, you would have the MWL and possibly others on the dash, along with codes to read. The Torque and the Dr. Prius apps have their uses but cannot be relied on for scanning for codes. You need a better scanner. You can find a review of several here. Lastly, is your dash lighting up 100% reliably?
Lol... There's nothing wrong with the app's ability to read data. This is caused by a known problem: Corrosion in the Battery ECU & Voltage Sensing Harness. It can often be fixed by doing nothing more than cleaning off all the corrosion. But while you're in there, its a good opportunity upgrade with better bus bars, nuts and wiring: Hybrid Battery Bus Bars | ACENBAY, LLC
hmmm..he installed a replacement ecu temperatures are afu voltages are afu you think it's corrosion on the harness? never seen a voltage sensor harness create temperature indication problems. like -400f and +400f yet there are no codes or warning lights
My guess is a problem with the connection between the Bluetooth dongle and the OBD2 port OR The Bluetooth dongle developed a problem. Do you have a different Bluetooth dongle that you can try?
Replacement battery ECU means that it's probably just like the one you took off the car someone needs to open the silver back cover and look at the bars going from the board to the receptacle It's just that simple and then while you have this out you've got the whole battery cover off you might as well clean the mess up.
nope, wouldn't expect that to be the voltage sensor harness. maybe the temperature sensor harness though.
I replaced a temp sensor harness that was giving out numbers like that and yes, it had error codes. There's no way it wouldn't have error codes with numbers like that. As for replacing the ECU, I doubt it was a brand new one from the stealership because they charge $800 for those. And yes, I've bought bad used ECU with corrosion problems that I had to return. One of them had a seal on it that would void their return policy if I looked inside and glad I didn't because I returned it soon as I got the same bad readings. Also replacing voltage sensor harness will help with bad voltage readings.
Well then don't open the one you bought open the one you had in the car usually all I've done is clean them up and they work fine as long as they're not dirty and got all that crap all over I guess I don't know I'm the last person to worry about these solid state and all that kind of stuff parts might look carefully with a glass and make sure that I don't see any burn marks and anything silly and clean all that stuff up and usually put it back and it all works so I'm real lucky or the stuff is clean and pretty durable I would say the denso stuff is pretty durable when you clean it up
Agreed, but if you look at their screenshots some of them are showing a voltage difference between blocks up over 400 volts. That's not valid data and both the sensor and temp system have failed.
yeah, I was just replying to the how could the voltage sense harness mess up the temp readings? post.
