Prius red triangle no codes

Hey all, I have a 2006 Prius with 113k miles on it. The red triangle, cel, and the red car symbol on the mfd all turned on suddenly. Got it scanned at orielly's but no codes came up.

May 7, 2020 · When you get a trouble code, usually it is too late to do much if anything about your hybrid battery. Then it happens—the triangle of death, the master warning light. The thing is this if you ... So what does the red triangle with an exclamation mark mean on a Prius? Table Of Contents. It signals that all is not well with your vehicle’s engine and that your attention is needed. This symbol though a thrive overdramatic for all the right reasons, is Prius’s version of the check engine light.Hello all, My wife has a 2004 Prius with around 185k on it that was intermittently displaying the Red triangle and exclamation point coupled with the on screen prompt, "Caution The transmission P lock mechanism is abnormal. Park your car at a flat place, and apply the parking brake completely." Following the on screen directions does not get rid of the warning.In disconnecting the 12 V battery you have deleted any codes that were present. 12.5 V is not bad and certainly not a reason for problems. If anything, all you need to do is put that battery on a charger and charge it up. #3 dolj, Jan 9, 2020.> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > ... After sitting for almost two weeks the red triangle and fault codes P0A80 and P3019 appeared assumed ithe 12 v battery (new yellow top 3 months ago) had gotten a little low. Drove 25 miles and reset, problem came right back.> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! ... The Red Triangle, VSC, and CEL came on today. From a little research on here I thought it might be the 12v battery so I popped it out and took it to O'Reilly to be tested. ... and that there were no codes, so I assume ...Car: 2007 105k miles Prius Touring. Bought used at 88k miles Codes pulled: P0A80: Replace hybrid battery pack P3000: ... After the red Triangle came on mid drive, there was a loud fan sounding noise in the back, but has not been heard since. ... PriusChat has been the go-to spot for Prius, hybrid, and EV discussion for over 10 years. ...Tallahassee. Vehicle: 2007 Prius. Model: II. PPH: (Possibly Pertinent History) Original Hybrid battery failed April 2015. 1st rebuilt (Dorman) battery installed April 15 - Failed July 2015. 2nd rebuilt (Dorman) battery installed July 2015 - Failed October 2015.

> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! ... Red triangle of doom comes up too. Plus the 'Car with Exclamation' in the LED display. ... No sub codes available to assist. Basic (free) Dr Prius showed battery cells within around 0.1V of each other, running nice ...Oct 1, 2015 · N/A. When you first log into techstream and connect to the vehicle, you'll see a column of buttons on the left side. Click the health check button to retrieve the codes. You'll get a screen that lists all the codes present. Look down at the bottom toward the right and click the blue icon that looks like an engine with an eraser on it. Many Prius drivers have reported the most common cause for a red triangle light is an issue with their battery. Typically, the codes that come up after a diagnostic are P0A80 and P3000. The P300 code refers to the Prius' battery control system. When this code appears, the problem is typically caused by several sources, but it means there is an issue with …At 60 miles an hour, the red triangle and check engine light. At 60 miles an hour, the red triangle and check engine light come on. They indicate it is a hybrid cooling pump and the stability control system. … read more. Ted Ritter. High School or GED.'08 Prius Red triangle of death and check engine w/o codes I was driving today no issues. Hit a small bump in the road, going normal speed in the city and my check engine, red triangle, tire pressure light all come on and also the car with exclamation on the touchscreen.

Aug 13, 2022 · The most common reasons for spotting the bread triangle with an exclamation point, also known as the red triangle of death, are our battery issues. However, oil issues can also make this warning sign appear on your vehicle’s dashboard. If you have an ODB reader, you’ll be able to test the health of the Hybrid battery yourself. by. Eric ... SOC seemed to be normal. OBDII ELM327 scanner showed the HV batteries were charging at same level, 16.8V and Aux battery was registering at 14.0 Volts. The next morning, after 20 minutes of driving the Red Triangle of Death appeared, and shortly after I experienced loss of power, with sporadic engine idle and interior traction battery fan was on.My beloved 2006 Prius with about 117,000 miles on it needs to go to the shop (I'm not a DIY mechanic). As I was driving home yesterday from work, all of the sudden the red triangle, VSC, check engine and a little car with an exclamation point on it on the display came on about 2 miles from home.Vehicle: 2005 Prius. Model: II. Writing this post more as a log of my own issues and my troubleshooting steps. There are lots of good posts on this forum, but I thought I'd add my own troubleshooting experience. Mileage: ~95000. Issue: Driving home from a business trip. 1.5 hours into a 3 hour trip. In the rain on the highway.In disconnecting the 12 V battery you have deleted any codes that were present. 12.5 V is not bad and certainly not a reason for problems. If anything, all you need to do is put that battery on a charger and charge it up. #3 dolj, Jan 9, 2020.You should check if your inverter pump is working. Open the inverter coolant reservoir and see if the coolant is moving rapidly when your car is "READY". You can also read the codes to determine what the car is reporting. Coolant is moving rapidly when the car is ready and the code I have is the p3000. #4 2007priuslol, Jul 2, 2021.

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My friend has a 2008 Toyota Prius. The red triangle came on. I got it to go away by disconnecting the battery and touching the + & - together without the battery connected. Then started it up ran 2 to 3 miles red triangle came back on along with the VSC being lit up. It did not seem to mess it up as to the running of the car till it was …2008 prius red triangle, check engine,vsc and low acceleration. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by ... You would need a better code reader to access the prius codes. A minivci from Amazon will work. It runs off a Windows laptop #2 JC91006, Aug 18, 2015. bisco cookie crumbler. Joined: May 11, 2005 107,601A PC educated guess for the red triangle would probably be the inverter pump has failed (his translation is the thermostat code). You can open the inverter coolant reservoir and see if there is movement in the fluid when the car is ready.II. Check for DTC's using a scanner, such as at Toyota or some auto parts stores. (You can get a basic scanner for less than Toyota's diagnostic fee.) Post what you find back here. It could be the steering ECU, the PS motor, the torque sensor, wiring... #2 nh7o, Jun 24, 2012.2007 prius. Ive had the same issue for about a year red triangle only. The red triangle comes on after 3k miles or so in between oil changes. it clears everytime i replace the oil. I drive about 500-600 miles per week. currently at 199k. i asked two service managers, had the same problem with a few other prius they service in town. couldnt ...My first step will be to change the oil and check tire pressure to see if it fixes it. Is is a red triangle with ! Inside or is it yellow (!) Yellow is your tire pressure sensor. Mine has been on for years. Red triangle is low oil or hybrid battery malfunction. I had the red triangle, but auto zone read it as no codes. Had a toyota tech read it ...

II. Check for DTC's using a scanner, such as at Toyota or some auto parts stores. (You can get a basic scanner for less than Toyota's diagnostic fee.) Post what you find back here. It could be the steering ECU, the PS motor, the torque sensor, wiring... #2 nh7o, Jun 24, 2012.Red triangle, (!) and VSC but no codes. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by dex3703, Sep ... but some toothpicks and dielectric grease turned the lights off and they've stayed off. Dr. Prius was able to give me codes where Torque Pro wouldn't. Hope this helps someone. #15 dex3703, Dec 5, 2019. Skibob ...At 60 miles an hour, the red triangle and check engine light. At 60 miles an hour, the red triangle and check engine light come on. They indicate it is a hybrid cooling pump and the stability control system. … read more. Ted Ritter. High School or GED.The codes on the MFD are for audio and Navigation (if your car has GPS). You need a generic OBD2 reader to read some codes. Best to use miniVCI w/ hacked Techstream. It will read ALL Toyota & Prius codes; software made for specifically for the Toyota family (Toyota,Lexus, Scion, Daihatsu(JDM)).N/A. So, I got the dreaded check engine, (!), red triangle, VSC light etc lights up on the dashboard yesterday. If I disconnect the 12V battery for 30 seconds and reconnect, the lights go away and after about 10 mins of driving they, are back ON. I tried to charge the battery with smartcharger (Schumacher SSC-1000A) at 2Amp but within 5 …The "death" triangle might indicate that you need a new 12V battery. A new battery fixed my problem on my old 2008. YouTube has instructions how to do it. Basically all you need is a 10mm socket and a bit of patience. #5 plug-it-in, Jun 20, 2016.You should check if your inverter pump is working. Open the inverter coolant reservoir and see if the coolant is moving rapidly when your car is "READY". You can also read the codes to determine what the car is reporting. Coolant is moving rapidly when the car is ready and the code I have is the p3000. #4 2007priuslol, Jul 2, 2021.> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > ... Check out this thread for more details and to report any other bugs. Check Engine, Red Triangle, code: P0A80. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by lil_broken_wing, Mar 30, 2015. lil_broken_wing New Member ...There are a lot of big hills in the SF area, and that could easily cause a real or phantom out of fuel situation. The red triangle is like Microsoft's BSOD (Blue Screen of Death), where it doesn't really make any difference why it's there - no matter what you are SOL. Tom. #5 qbee42, Sep 18, 2007.46K subscribers in the prius community. Everything Toyota Prius! ... No codes. then i drove over 15K miles and no issues. Thankfully Reply reply Over_Selection9092 • I agree with looking at codes. Maybe it thinks a door is open. In my 04, the red triangle comes on when the driver door is open in drive. Reply ...After engaging the safety interlock, it would take 3 on/off cycles to clear the red triangle and the fault code would go into "historical" status. Disconnecting the battery accomplishes the same thing and totally clears the fault memory. Glad to hear everything is up and running again. #16 TMR-JWAP, Dec 2, 2019.I have a 2007 Prius, approx 175,000 miles. Replaced hybrid battery approx 1 1/2 year ago with a new Toyota hybrid battery. 12 volt battery replaced 3 weeks ago. Yesterday had red triangle with ! And check engine …

Apr 9, 2012 · 2007 prius. Ive had the same issue for about a year red triangle only. The red triangle comes on after 3k miles or so in between oil changes. it clears everytime i replace the oil. I drive about 500-600 miles per week. currently at 199k. i asked two service managers, had the same problem with a few other prius they service in town. couldnt ...

i have a 2008 prius with something like 180k miles on it. the other day while driving the red triangle of death started flashing intermittently, accompanying it in the touch screen display was the word "problem" followed by what looked like a red temperature sign. it didn't impair my ability to drive at all, so i hurried home & haven't driven it since. i was driving, so i couldn't take a ...I have refilled the system with this captured coolant and run the engine for several minutes but the red triangle will not go away. The reservoir is full and the radiator is full. ... You'll need a code reader that's capable of reading all the prius codes #8 JC91006, Feb 11, 2018. SFO and Raytheeagle like this. SFO Senior Member. Joined: Feb 7 ...Other Hybrid. Model: N/A. If the fob battery is dying, you will hear a long beep when you turn the car off. There will be no dash warning lights. The red triangle is indicative of something else. Only the codes will tell. #3 firepa63, Mar 31, 2009.Psychiatrists don’t know what “the pink triangle pill” is and screaming at their staff can impact your care podcast episode We all like to think that our psychiatrists are perfect ...Those codes are from the brake ECU, and so are the Prius-specific codes C1259 and C1310, so all those codes account for the VSC and ((!)) lights. The C1259 and C1310 both simply tell you that the brake ECU has been notified of trouble codes in the hybrid-vehicle control ECU. The HV control ECU codes are why the red triangle is on.N/A. So, I got the dreaded check engine, (!), red triangle, VSC light etc lights up on the dashboard yesterday. If I disconnect the 12V battery for 30 seconds and reconnect, the lights go away and after about 10 mins of driving they, are back ON. I tried to charge the battery with smartcharger (Schumacher SSC-1000A) at 2Amp but within 5 …Apr 1, 2020 · My friend has a 2008 Toyota Prius. The red triangle came on. I got it to go away by disconnecting the battery and touching the + & - together without the battery connected. Then started it up ran 2 to 3 miles red triangle came back on along with the VSC being lit up. It did not seem to mess it up as to the running of the car till it was turned off.

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I have 2008 Prius with 126k miles on it. I was driving at highway and three lights ( red triangle, yellow circle with ! and the red car with the ! on the display) came on. I didn't stop right away. After 2-3 minutes car shut down and never start again. Inside lights and signals were okay and bright. But even I put the key in, car didn't response.Electrical wiring color codes include black, red, green or bare, white, and blue or yellow. The color code indicates what a specific wire’s function is. Black wires are hot electri...2008 Toyota Prius. Red Triangle Exclamation Point, Red Car Exclamation Point, Tire Pressure, & VSC Light But No Check Engine Light. Sometimes the Tire Pressure and VSC light go off but the others stay on and then turn off. But the lights go on and off. ... Used their scanner and it pulled codes for misfire, changed all 4 spark plugs and that ...> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Main Forum > Generation 1 Prius Discussion > Attachments are working again! Check out this thread for more details and to report any other bugs .Many Prius drivers have reported the most common cause for a red triangle of death light is an issue with their battery. ... The P300 code refers to the Prius ' battery control system. When this code appears, the problem is typically caused by several sources, but it means there is an issue with the HV battery's ECU.It is impossible there is no code with red triangle, use code reader compatible with prius. ... Get dr Prius to read ev battery codes. I just fixed a p3000 by doing rewiring from a connection for the hybrid fan that was all corroded Reply reply Top 3% Rank by size . More posts you may like r/ElegooMars. r/ElegooMars ...My code came back in less than 30 seconds. "The first step is to clear the P3009 trouble code by unhooking the 12V battery for a moment or using a code reader. Now turn the key on/ but NOT start/ready mode, wait 30 seconds and if the code comes back, the leak is in the battery case. If the code does not return, turn key to start to "ready mode ...Is this the red triangle of death (2008, 185,000 miles) Check your oil level immediately. Often times the red triangle of death will flash intermittently when oil level is low/near empty. No oil = Engine kaboom. Could be something else... but do not drive anywhere else until you at least check your oil if you value your Prius's life.VSC ABS and ! lights plus red (!) for no particular reason temprementally the above lights started appearing upon starting the car (2004 prius). The brakes do not seem to work either while these on. if I drive few meters the lights disappear and the brakes start working properly. After this everything works fine until the next power cycle. ….

N/A. When you first log into techstream and connect to the vehicle, you'll see a column of buttons on the left side. Click the health check button to retrieve the codes. You'll get a screen that lists all the codes present. Look down at the bottom toward the right and click the blue icon that looks like an engine with an eraser on it.Hello .so I have read triangle in my toyota Prius so I found any codes, the car running good I checked the hybrid battery HV is very good the 12v battery is good the oil the water pump the coolant water pump all those is good the problem is when I start the car I can't see the ready mode on the dashboard and I see the read triangle .2007 prius. Ive had the same issue for about a year red triangle only. The red triangle comes on after 3k miles or so in between oil changes. it clears everytime i replace the oil. I drive about 500-600 miles per week. currently at 199k. i asked two service managers, had the same problem with a few other prius they service in town. couldnt ...Hi all, I drive a 2007 Toyota Prius. My car got the red triangle of death, along with the check engine light , VSC, and the exclamation point sensors all going off too. The car still works, sometimes like normal, sometimes it struggles to accelerate or keep the A/C cool, etc.Red Triangle, Code p0AA6. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by spacemanspiff, Feb 26, 2020. ... My 2009 Prius started popping P0AA6 with info codes 526 and 613 this past week. If the inverter isn't getting enough coolant, the extra heat reduces some components electrical insulation characteristics just ...> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Server migration is complete! Check out this thread for more details and to report any bugs .> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and ... unit on Amazon (look up "Autosaver88" for the exact model) but after maybe 50 miles of driving I got a P0420 code while on the highway today. ... I had a scare where the red triangle appeared while I was sitting at a red light. Luckily turning the car …Seymour Tennessee. Vehicle: 2005 Prius. Model: N/A. 2005 Prius 190,000 miles....Red Triangle and brake light on panel....as soon as you park and try to restart it will not engage in drive or reverse....check for codes show nothing....the last time it happened i was able to use an obd2 device with an iphone to clear codes even though no codes ... Prius red triangle no codes, What Are the Causes of the Red Triangle? There are three causes of a “Red triangle of death” in Prius: battery, standard battery issues, and low oil pressure. 1. Battery issues. The red triangle on your Toyota Prius can be caused by issues with the hybrid battery, which powers the electric motor and the gasoline engine. , Everything Toyota Prius! Currently private to support the proposed changes to third party apps. Members Online • MaxAmmo163. ADMIN MOD Have the red triangle of death and no codes on the OBD2. Gen 2 Prius. Checked oil level Checked the water inverter it is working Checked hybrid battery fan, it works Checked the 12v battery is good The hybrid ..., Not everyone can afford to install solar panels or get a new Prius this Earth Day, but there is one place you can go green without spending an arm and a leg or radically changing y..., My daughter recently bought a 2006 Prius with 170K, Car was running great at purchase time with no issues but unfortunately the honeymoon was short lived. Less than 50 miles, she got the check engine light and red triangle. Car seems to still to drive fine. Had a dealer near Knoxville TN pull the codes and the only code was a P0A9C - Hybrid ..., Red Triangle, Problem and slow Prius on uphills. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by aliasbody, Apr 5, 2015. aliasbody New Member. Joined: Apr 5, 2015 5 1 0 Location: Barreiro ... will need to read the trouble codes, which will give you (and us) ..., Vehicle: 2005 Prius. Model: II. A bit more on this. The 12V battery was at 12.2 volts. I put a trickle charger on it and brought it up to 12.9. Now when I power up the car the red triangle is still there but the brake and vsc warning lights are off. The voltage at the battery reads 13.5 with the car on., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care ... 2007 Prius - Battery not charging, no acceleration, Red triangle and other warning lights. Discussion in 'Gen 2 Prius Care, Maintenance and ... and the check engine light. Despite all of these I can get no codes when I try my scantool. I bought a Tachyon H1, with the idea that this ..., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! Check out this thread for more details and to report any other bugs. ... Need to get your codes to see what is throwing Red Triangle. Also 12v health is one thing to consider. The coolant side water pump is common ..., Hello. Have a 2008 prius. Ran great till 12 volt died. Bought a new one and replaced it. All internal electric works fine now. I just can't engage the combustion engine. I get red triangle and no ready light. Everything else is working. I heard fuel needs to be at least half full to restart engine., Here are the top 5 fixes for "Check Hybrid System" HV battery codes and failure. The high voltage or traction battery fault codes are usually accompanied by ..., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Technical Discussion > Attachments are working again! Check out this thread for more details and to report any other bugs ., Go to prius r/prius • by ... The car was doing it's normal grinding thing more intensely and that's when the car gave the red triangle and I tested it and got the p0a0f code. I drove it home no problem. When I started it back up to test codes the triangle was gone. I've been running it and driving it the afternoon and the triangle hasn't come ..., My friend has a 2008 Toyota Prius. The red triangle came on. I got it to go away by disconnecting the battery and touching the + & - together without the battery connected. Then started it up ran 2 to 3 miles red triangle came back on along with the VSC being lit up. It did not seem to mess it up as to the running of the car till it was …, Jul 20, 2020 · no - but I'm only using the free version of dr. prius. i do have the paid version of torque pro. nither of these show a battery or engine code - even though red triangle and little headlight wobble symbol are displayed. (maybe it's just that headlight leveler thing). , > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > Attachments are working again! ... Was driving the other day and the red triangle plus vsc, abs, and another light came on. No check engine light. ... anyway it continued scanning and said no codes found. So I told it to erase all codes and when I did ..., I have a 2007 prius with 175k miles. I'm having intermittent Red Triangle while driving. Comes on every 20-75 miles. I have unplugged the 12v a few times to clear it so my car will start. I'm getting B1200, B1207, B1271 Codes (no current malfunction) under Gateway. I'm not sure how old these codes are. I've been driving the thing trying to get ..., 1. The check engine light is an icon shaped like an engine. This certainly is distinct from the master warning red triangle. 2. It is possible for the master warning red triangle to turn on when no diagnostic trouble codes are logged. For example, make the Prius READY and put the gear selector into D. Then open the driver's door and see what ..., 165 Answers. The red triangle is the Master Warning light may also be referred to as hybrid system erro warning light. You must have had an intermit problem with the battery system for the light to come on and go off. You should take the car to a shop or dealer that works on them systems to see if it stored a code so you will have an idea what ..., Because home inspections typically happen after a walkthrough, be on the lookout for these red flags while house hunting. Expert Advice On Improving Your Home Videos Latest View Al..., jadziasman Prius owner emeritus. In my 2005 with 133,000 miles, I recently have symultaneously been getting the big ! red triangle on the dash and yellow headlight symbol (with small pointing arrows at either end of symbol) on MFD - see attached. This then goes away but returns, usually after traveling the rural washboard paved local roads., #winwinsolutionsWelcome to Win Win Solutions Channel. This is an easy way to read and diagnose your red triangle exclamation mark and check engine light on 2..., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Main Forum > Generation 1 Prius Discussion > Attachments are working again! Check out this thread for more details and to report any other bugs ., Here are the top 5 fixes for "Check Hybrid System" HV battery codes and failure. The high voltage or traction battery fault codes are usually accompanied by ..., 4783 posts · Joined 2014. #3 · Sep 11, 2021. P2103 is typically set because of electrical (TA-A circuit) issues. These cannot be overlooked in the troubleshooting stage, especially when dealing with an intermittent problem. Read more at: P2103 Throttle Actuator A Control Motor Circuit High Input., Jul 10, 2015 · > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting > ... Red triangle, no codes. Discussion in 'Gen 2 Prius Care, ... , N/A. I just had this same issue happen to me today. The door open light + red caution light was on with a constant beep while in drive. It turned out to be the inside of the door was dented where it presses up against the driver door sensor. Now, my Prius has 280,000 miles on it, so that may be part of it., You are right, the catalytic converter issue is unrelated to your current no-start problem. 4. You are wrong, with regards to a "dead" traction battery and the Prius being able to run. It depends upon exactly what is wrong with the traction battery., Santa Fe, NM. Vehicle: 2005 Prius. This sounds like a common problem, too much oil added in, combined with another common problem, a weak 12V battery that runs down quickly with key on/engine off ("Ig-on") and erases the codes in the process. If you had no oil, you would have the Red Triangle and the oil light showing., Prius Red Triangle No Codes If the Prius has a red triangle with no codes, it indicates that there is a problem with its electrical system. To ensure the vehicle’s integrity and safety, it is best to take it to a qualified mechanic for assessment. In order to prevent further damage or issues, one may choose not to drive during this time until ..., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Main Forum > Generation 1 Prius Discussion > Attachments are working again! Check out this thread for more details and to report any other bugs ., The P300 code refers to the Prius' battery control system. When this code appears, the problem is typically caused by several sources, but it means there is an issue with the HV battery's ECU. ... 2005 prius with the red triangle on the dash and the car with a line thru it on the touch screen., My 2005 prius red triangle light, battery fan, VSC, and ! symbol just came on. This is what happened in 2019 and a rebuilt drive battery by Greenbean fixed the problem until today. It drives sluggish. Greenbean say it's under warranty but the need evidence of P3000 or P0A80 codes to come fix it. My OBD2 code reader just have P116,1121,1123,1150 ..., So what does the red triangle with an exclamation mark mean on a Prius? Table Of Contents. It signals that all is not well with your vehicle’s engine and that your attention is needed. This symbol though a thrive overdramatic for all the right reasons, is Prius’s version of the check engine light.