Prius Top 5 (Check Hybrid) high voltage HV battery fault codes (triangle of doom) cheap fixes

[@briansterling5912]

I used to replace Prius battery modules on the side years ago and this guys advice is spot on.

[@saneauto]

Thank you very much Brian. Its good to have you and your experience here in the comments.

[@Freud_Mayweather]

How can I find a place to do mine

[@sammynazz]

@@saneautodid you ever have to deal with error code P0AA6 isolation fault on a Prius? I swapped the hybrid battery and the 12 volts battery so the problem is not in either one and no luck yet in pulling the sub codes like 526-611 up to 526-614 to point to transaxle or inverter or AC The cars runs perfect after resetting the code twice until it’s turned off

[@PintoBeener]

Replaced my hybrid battery last year in April and in May, I started getting the P0A90 error code. After testing it with various OBD2 apps, it’s showing the battery pack needs replacing. I live in rural California and the company that replaced it last year is slow walking the replacement or servicing of the battery. Their website says lifetime warranty and will drive to anywhere in California but keep making excuses. The name of the company is Lifetime Hybrid Batteries out of San Louis Obispo so putting this out there for folks that reside in California to use them with caution.

[@gustavomartinez324]

That code points more to drive motor A not anything else does having anything to do with the main HV battery

[@MsHiker100]

@@gustavomartinez324 can you explain that better? This sounds like important advice that might apply to me, but I think you have some typos in there.

[@gustavomartinez324]

drive motor A performance that the code that u put on here POA90 that points to the transmission transaxle shaft or gear meaning the transmission is the problem are u sure it’s not POA80 code those 2 different codes can u verify what codes ur getting so could give u clear answer do you have a good scanner by the way or how are u obtain the codes on OBD2

[@mandycollins6840]

I am so excited to have found your videos!! Single mom here who just wanted a car that got great gas mileage. Bought a used 09 Prius off Facebook 🤦🏻‍♀️ I thought I was so screwed until I found your videos! Now I know what steps to take to try and fix her! THANK YOU!!! Now keep your fingers crossed that I can do this lol

[@saneauto]

Awesome! my Mom was a single Mom. Still is. Dad was gone long before the Divorce & before that was a decade of USAF & Vietnam. Its amazing how much adversity someone can overcome & even thrive in. We come out stronger in the end. Just be more careful than me. Ive woke up in the hospital more than a couple times ;-)

[@WilliamL217]

How did you make out? I once replaced my Prius battery bur it didn't fix my last Prius. My current 2012 Prius now has a red triangle of death. I replaced the speed sensor to get rid of one code but still can't get it to start. It's so hard to find ppl to work on these cars in my area. The local Toyota dealer just tells ppl to change the hybrid battery. It's frustrating because when these cars are running they are awesome.

[@carlloeber]

Yes that was a good thing to remind the people about pushing down the slide on the orange safety switch plug

[@GaryGorman-nl3hb]

Exactly where is safety switch located

[@John-om5dm]

Oh my God, i didn't have the orange plug slid over! Such an easy fix, thanks dude, i feel a complete dingbat

[@saneauto]

You're welcome! Dont feel too bad. Guess how I learned about this some years ago? ;-)

[@cjackfly]

​@@saneautowill your HV battery drive your electric motors at all when this is disengaged?

[@2002erli]

This is a VERY INFORMATIVE VIDEO. 5 STARS- THANK YOU ! ! !

[@saneauto]

You're welcome! Glad it was helpful!

[@enquire422]

Thank you so much for reminding me to push down onto the orange connector , drove me crazy for 2 days thinking the module I changed over was the issue!!

[@saneauto]

Glad it helped. I try to show all the stuff thats tripped me up and some that I have avoided but could have easily got me on a bad day.

[@CelexiGOON]

I went and bought a lithium battery for my 2010 Prius. Dr. Prius. Car is amazing and acts brand new

[@davidvuchetich3045]

what did it cost?

[@CelexiGOON]

@@davidvuchetich3045 $2300 after taxes. It was for a 2010 Prius. Replaced the green bean battery that lasted only 3 years

[@davidvuchetich3045]

Did it urself ? Did u have to wait a long time for the lithium to arrive?

[@CelexiGOON]

@@davidvuchetich3045 two month waiting list but they came and were in and out in 48 minutes.

[@CelexiGOON]

There was a waiting list.. about two months and then a technician came to me. Installed it and then drove it using a iPad and iPhone to make sure it was okay to drive after he left. Took 40 min.

[@honestlee4532]

I like the idea of gluing something in the vent to keep it open!

[@Philjj61]

I replaced my battery with a DR Prius reconditioned and warranted one (AU $1850 / USD $1205)and was still getting the triangle after a while of driving, turns out the inverter coolant pump was not being effective and a cheap fix. Easy to check, look in coolant reservoir for proper flow. Seems to have fixed it. The battery wasn't good anyway so no regrets. I was still getting good fuel economy so the battery was ok.

[@brandonmichealsimpson]

This is the third time I've used your video to replace cells. I appreciate you so much

[@saneauto]

Thank you for saying that. What year model are you working on?

[@brandonmichealsimpson]

2010 Prius base model hatchback. It’s a pleasure to have such smart people be so thorough 🎉

[@cjackfly]

​​@@saneautopoa4c poa4d c1259 c1310 codes come up on My 2007 Highlander Hybrid. Am I s.o.l.?

[@Reviewing_Playing_and_More_RPM]

Always like those tips at the end, who knew bottle caps had so many useful purposes. Have a great day Sane.

[@HomeImProveMentHow]

Jennys how's it going good to see you over here this is a good information we have a high bred For fusion I'll be by to visit soon God-bless you bye for now Ken.

[@sportsmobile8328]

I rebuild my battery 5 different times. The first time it lasted 2 years. It went down in longevity from there. I finally got a warranted battery from Green Bean Battery. 👍

[@mclifed]

Had to subscribe after that quotable line. You all know the one.

[@Odeh]

Best video on this common Prius problem

[@saneauto]

Thank you That means a lot coming from someone who has also made a lot of videos

[@twisttwister8254]

Fantasic video. My car just got the triangle of death notice lol 😢

[@mishmishzorba5001]

MY BROTHER....I APPRECIATE YOUR WORK....I GOT A 2019 TOYOTA YARIS HYBRID HATCHBACK AND I'M BEING TOLD I NEED TO REPLACE A PART THAT'S SUPPOSE TO BE IN CHARGE OF SWITCHING THE BATTERY FROM ELECTRIC TO GAS AND BACK TO ELECTRIC....I don't know the name of the part ...could you tell me more about it and how much for a new one and how much for a used one...thanks brother.

[@aqasim100]

I have checked the battery voltage all cells have 7.7 volts. But still getting the code. Can you advise

[@davidhinton3595]

You talked about the danger involved. Did you remove the safety disconnect plug?

[@nuneze2008]

Good tip on the plastic vents because I put a lot of heavy s*** on my in the back end I should probably check that cuz my battery is fluctuating I'm getting a lot of error codes

[@saneauto]

Awesome!

[@thomaspichardo1932]

You are the best! Thanks for sharing all your knowledge 🙏

[@johnfitbyfaithnet]

Agreed

[@HasaanKhan-h9h]

I have 2013 prius. I’m getting the check hybrid system sign but no check engine light. Anyone know what might be the case?

[@bryanasher6245]

Thanks for all your knowledge! You are amazing!

[@saneauto]

Thanks for the generous comment. Your Awesome!!!!

[@alext8828]

What scanner did you used to identify the bad blocks?

[@riceburner4747]

Thanks Vic! Did u clean/replace buss bars on the other side? Thank u for all u do for prii. I hope u start doing on gen 4 prius. Ur videos are awesome!

[@saneauto]

Thank you. Yes I did the other side too. I'm doing a Prius head gasket next

[@sudinebabz8651]

Vous enlevez le couvercle sans enlever avant le service plug et sans gants de protection électrique ?

[@matttrafton2725]

The triangle.of death came on along with the hybrid systems warning light yet, both were gone the next day. Perhaps I should take.preventative measures.

[@HomeImProveMentHow]

Ford Fusion hybrid 2015 I don'tnow what generation it is, but I don't know how comfortable I would be messing around or trying to do something how you avoid the high voltage shock that's the question the shock a death that is look forward to hear from you by for now I just went live 1st 16 minutes I'm trying to figure out scream yard just a heads up by pronounce

[@Retr0killn]

2 days ago got triangle of death in my 09 Camry saw a video on cleaning filter and fan looks like a pain in the ass but going attempt it as I love the car and don’t have to cash to dish out. Would your recommend cleaning the fan first before moving on to the battery portion. And hoping he light goes off.

[@johnfitbyfaithnet]

Excellent tips

[@saneauto]

Thanks a lot

[@noahadim]

Great idea on the bottle caps, I will be doing that probably today

[@saneauto]

Awesome! Thanks for commenting. Lots more Prius videos here in the Prius repair playlist and lots more on the way.

[@ZZCPA1]

Ever had a U0293 code on a second gen Prius? If so, what do you recommend as a good place to start and what all to check? Thank you.

[@childofgod4862]

Thanks for your tips because after I changed my 12 V battery, Christmas lights on my front window. I could not start So I listen to your video and remembered to press that electric plug all the way So I went to my Care and lifted that up and pushed it down, then Wala, my car stared working again Thanks! Now question is, Do you know anybody in Fresno CA area to check my hybrid battery? because I used this Prius from 2008 until now So it is almost 13-14 years I want to catch those problem before it starts Ok? Thanks again

[@saneauto]

I dont know anyone out there but I filmed enough of the times I spent checking hybrid battery cells and changing bus bars etc to cover everything in my Toyota repair playlist tinyurl.com/y4loxjlv

[@robertsherertz]

I've got a gen 3 2012 with u0073 what's the most likely culprit I can't find anything wrong in the information when I scan it

[@Juanmi397]

Hi, I need some help here! I got the check hybrid system lights and when going to clean the fan for the hybrid battery I found out that the black plastic piece for air flow that you talk about in your bonus tip is not there. Is this what’s causing the issue? Should I get one? Or would the dirty fan be the actual problem? Thanks!

[@MakeMemoriesTravelMore]

great video and informative! I have some new bus bars coming in tomorrow to change them out. I'll definitely make sure that the main service plug is disconnected. Anything else you recommend other than wear protective gloves?

[@saneauto]

Heres my video changing bus bars kzbin.info/www/bejne/n4uslYawobiIaMU The only safe way is to pay someone else to do it. Your right about gloves. Long sleeves can help too. Just remember if you sweat so much your sleeves are wet they become conductive too. Oh and try not to spill your coffee on the battery. Its a waste of good coffee. Heres my video on how to clean the fan because if your already in there, kzbin.info/www/bejne/o4XKgKmilrahrqs

[@williaml8474]

Nice. Do not see links for a cheap and pricey voltmeters.

[@saneauto]

Thank You for letting me know. FLUKE 17B+ Digital Multimeter w/ Temperature & Frequency -- amzn.to/3tmZMu4 Cheap Multimeter Tester -- amzn.to/45fjxB6

[@2thebestsport839]

Do the terminals have some type of dielectric grease?

[@saneauto]

They do when Im done with em. amzn.to/3oXnCHJ

[@joannes8485]

Any recommendation for a certified mechanic who could replace the Hybrid Battery ECU and Voltage Sensing Wire Harness on a 2008 Prius in the NYC area. Had water and now corrosion issue. Otherwise the hybrid battery is in working condition. I'm having a hard time finding someone. Thanks.

[@AdrianoBoller]

I cleaned mine on the contacts, but the panel lights up, I remove the white cable and after 5 minutes it goes back to normal. But after a few days, you have to reset the white cable in the fuse box again. I noticed that the lights come on when the air conditioning is turned on or when the car jerks when switching from hybrid to mechanical. Am I right, could it be something in the hybrid engine, a bad contact or something like that?

[@edwinbab705]

If dr prius shows temp three 116 shall i move cells around to other side and do i need load balance

[@richardking6066]

Yikes! Working with bare hands while the orange safety disconnect is still in place? 250v DC could give you quite a jolt!

[@sueellenmcgoey8708]

Excellent video

[@saneauto]

Thank you very much!

[@christopher23.]

I have a P0343 code. I swapped the cam sensor. I also have a check hybrid system error, and my car does not want to start now it turns on for about three seconds, and the lights turn on on the dashboard.

[@edwinbab3205]

2013 prius is it necessary to clean bis bars

[@silla-je9od]

Hi. You mentioned in this video you also made a video about the inverter. I looked through this playlist, but didn't see it. What is its title, or link? Thanks.

[@ATJHTRAVELS]

Great tips sledgehammered that like button stay safe awesome and blessed enjoyed and shared

[@franciscogomez2565]

I have the same code and I have gone through and tested every cell one by one. The HV system seems fine and I’m leaning towards the AC compressor? Any advice on how to test it? Considering once the code trips the ac does not work…

[@saneauto]

The A/C needs plenty of power from the HV Battery to work. Check some of my newer videos on testing HV modules with the T180. kzbin.info/www/bejne/jJKacneAr5maptE

[@edgarmartinez3106]

how you test the fan if has 4 pins ?

[@MojaveKY]

Another excellent video !

[@carlloeber]

I wanted to know how I can ask you a question.. The question is can I charge the complete hybrid battery by simply attaching a second battery to the car inside the car and driving it? Or by starting the car with one battery and then switching the inverter leads to the dead battery? I know it would be very dangerous and require a lot of care.

[@saneauto]

Thank you for commenting. I haven't tried anything like that.

[@MarkJunelleHarmon-pj9nh]

Just watched this video. So 3xs in one year the triangle of death happened with code p0a90 bringing the car to a halt. Hubby took out the battery, we cleaned the bus bars and silver plated them. Again, it happened as we were going up hill. Every time this has happened, we were going up hill. The fan, we cleaned but hubby thinks it should have spinned a little better and we questioned whether it needs replaced. It works but maybe intermittently - we don't know. We do know the battery has gotten super hot and that may be why it comes to a halt. So, I'm thinking the bottle caps MIGHT be the answer we have been seeking. I hope so because I'm really tired of being stranded. Will get back to you. Feel free to comment if you think there is something else we should be looking at. I'm hoping we do not need to worry about the transaxle.

[@anir101]

Hi , my Prius gen3 poped an error check hybrid system, I tried checking if the fan works by putting a paper on the inlet ( my Prius had no filter behind it) I felt no suction and do not hear the fan spin ) is the fan suppose to be always working when the car is started ? Even if one of the hv battery modules is faulty ? I'm asking to understand if I have found the problem which is that the fan no working so the battery down for safety.

[@alantierney1]

Hi what would you say to this I noticed my HV battery indicator on dashboard was being on the lower side ok on way home triangle of death came on it’s a 2004 Prius battery cooling fan came on my battery bar was at 1 bu it would flash full all green for like two seconds then back to one bar. No codes showing I get home take HV battery cover off put brake on put gas down to test charging not Long cooling fan on showing one bar on dash checked HV battery over 400v my meter only goes to 400v. So any way it is overcharging and not showing property on screen what most likely is the problem. Thanks looking forward for a comeback on this.

[@WiSeNhEiMeR-1369]

thanks coop ...

[@KasraOskuie]

Great info

[@AnisChouikha]

J'ai changé 2 cellules mortes mais le défaut s'affiche après 2 heures de rouler pensez vous une mise à jour pour les cellules

[@saneauto]

kzbin.info/aero/PLADlyv_PN7XKgRkxE62bMJYpr_mLHd6iv

[@michaelschmidt7014]

Hey Vic, When you change the FI's to the 12 hole type what does that do to fuel economy?

[@saneauto]

I havent been able to notice any difference in the mileage. I drive mostly freeway though.

[@CamaroTime]

I could see me in a Hybrid would just be shocking!! LOL....Cause I would be one of thosse that had to try and fix it myself

[@saneauto]

That is my "current" situation ;-)

[@HomeImProveMentHow]

Camaro time how's it going it is really good information to started dropping a say Hey keep looking up and bye for now

[@johnwagner9192]

I'm getting A P3019 and P1E01 code. Help!

[@treylyde999]

Waiting for my whole assembly

[@mzb4549]

Hi, I left my Toyota Prius 2006 in my garage without starting it for 7 months, I just tried to start the car and it didn't work, some of my friends told me that because of the hybrid battery is dead. Please can you advise me what should I do to start the car. Regards

[@saneauto]

The 12 volt battery is more likely to go dead than the HV Battery.

[@mmmadog]

Never pull those covers off while the bright orange lock out plug is still connected like he did.

[@theshawltyone]

What if they are at 6 volts?

[@sufzyyyy]

Diagnostic code - P3023 - Heated Oxygen Sensor 1, Bank 2 - Common Communicatuon Malfunction Can someone please advise on how to fix this or direct its this battery related or Lambda sensor related? Thanks

[@ronaldo77782]

God bless you .

[@saneauto]

Ditto

[@hamadathyabat101]

Hello I have a 2011 Lexus ct200h I have changed head gasket over the weekend, after that the car started but gave me check hybrid system, then it stopped goin into ready mode! Scanned shows P0A0D code and i can’t reset it or clear it! Any ideas? Btw battery is 1 year old

[@saneauto]

The service plug I mentioned in the video will set the POAOD code if not installed correctly. Watch the part where I show installing the plug and how it clicks carefully.

[@hamadathyabat101]

saneauto i tried and plugged it correctly, now it shows poor engine power, engine not able to start. Could it be a timing issue or u think battery pack gave up?

[@ericwilliams1989ew]

Any idea of the code P0AE0?

[@brandonmichealsimpson]

Is the high voltage fan always running?

[@saneauto]

Its not supposed to.

[@csouthern8692]

I am praying 🙏 that mine is just a dirty filter 🙏

[@saneauto]

If not, try getting one of the parts stores retrieve the codes for you. Many of them will offer the service for free. If I have made a repair video involving that code it will be in my Prius repair playlist.

[@AL95621]

Lmfao 🤣 all I did was drive 60 and come to complete stop. If your displayed battery screen shows 🪫 or low. It needs to be replaced. No don’t replace individual cells. Replace whole battery. Paid 950$ with install and warranty. My 2009 2nd gen has 250,000 miles on it. Drives like a dream gets 62 mpg in city. 70 + on freeway.

[@emeraldhouseplants]

What company did you go with?

[@alext8828]

The meter's from Harbor Freight. $6.

[@esam7865]

what year is the prius?

[@saneauto]

2010

[@Uncommonsense999]

Service plug should be 1 for safety reason.

[@pydepiperproductionsllcjon7585]

Here is my issue. I was having a cooling issue blown head gasket. But I put some blue devil it helped the shaking and I drove it just fine. Then got radiator no heat I flushed and changed water pump. Soon after that car drives fine then shut off. There is a yellow car with ! In the middle which is charging issue. Main 12 volt went down. I charged it. Car started but now it won't drive past 7 miles till engine shuts off and won't turn on. I pull over and shut everything off and gas engine comes on but moves slow. This driving me nuts. Most mechanics say they know nothing about Hybirds.

[@sueellenmcgoey8708]

Check your egr system they get clogged with carbon deposits leading to blown head gaskets

[@darrylhowe1465]

The service plug should have been removed; at the start of the video.

[@janekuspaua9580]

Triangle is not only a battery it self!

[@philspaseo2377]

Even tho the code shows a bad hybrid battery

[@treylyde999]

Guys I burnt my wrist when my watch buckle got against it. Burnt the leather and continued to get hotter after I pulled it away. Only real power can do that so be careful

[@Javz177]

Where u work at? I need help

[@saneauto]

Thank you for the offer but Im retired. What you see here in a couple months, I used to do in a couple days.

[@miketaylor4179]

Check air filter guys mine was full of acorns from squirrels set off triangle cut car off also.

[@saneauto]

Yes! great tip Mike. I also have a video about cleaning the cooling fan it was nasty because this vehicle and many other 2010's came with no HV battery air filter at all. Others with an embarrassing weak screen (still no filter).

[@Notthatguy23]

Yeah mine died and now I just want to use a toilet

[@Aagii1208]

P0A9E code

[@AI-Consultant]

do grid chargers or superchargers for prius gen 3 actually work on a hybrid battery that has sat for over 6 months without starting? they go for $300 grid charger, to $500 for super (fast) charger ?

[@johnfitbyfaithnet]

Excellent tips