Prius red triangle no codes

I did NOT disconnect the 12V battery before unplugging the fan. I forgot this step. Will it cause issues? I also do not have a code scanner to remove the code. The red triangle is appearing on the dashboard. To check for air flow - I turned the car on the other day, and put a piece of paper against the air intake on the backseat.

Unlike the Tesla Model S battery, the Toyota Prius battery is light and easy enough for thieves to steal in 20 minutes. By clicking "TRY IT", I agree to receive newsletters and pro...2009 Prius with 133K miles.12 V battery was changed 3 months back and also Inverter Pump was replaced recently. While on the road driving in the normal traffic, saw the red death triangle coming on. ... and checked the codes using a generic OBD reader and found PA080 (Replace Battery) and P3012 (cell 2). I erased the code which resulted in Red ...I did NOT disconnect the 12V battery before unplugging the fan. I forgot this step. Will it cause issues? I also do not have a code scanner to remove the code. The red triangle is appearing on the dashboard. To check for air flow - I turned the car on the other day, and put a piece of paper against the air intake on the backseat.On the drive home, when accelerating on the freeway above ~ 60 MPH, the red triangle would display for a few seconds and the screen displayed "Problem." ... If your code reader is not using Techstream software, it will most likely miss many Prius specific codes, that "universal" coder readers can not read. California is a big state.Red Triangle, Check engin, VSC On. Codes HELP! Pics. Discussion in 'Gen 2 Prius Technical Discussion' started by CollegeKid, Oct 30, 2017. CollegeKid New Member. Joined: ... I suspect your code reader cannot read all the Prius ECUs, specifically the ones to do with the HV battery. You may need to get or borrow a more capable reader, then the ...Attention automakers: You’re doing it all wrong when selling your hybrid cars. Those Toyota commercials featuring R&B singer Raphael Saadiq and hipsters grooving in a Prius V? Not ...Get ratings and reviews for the top 11 lawn companies in Red Oak, TX. Helping you find the best lawn companies for the job. Expert Advice On Improving Your Home All Projects Featur...

Everything Toyota Prius! Currently private to support the proposed changes to third party apps. Advertisement Coins. 0 coins. Premium Powerups Explore Gaming. Valheim Genshin Impact Minecraft Pokimane Halo Infinite Call of Duty: Warzone Path of Exile Hollow Knight: Silksong Escape from Tarkov Watch Dogs: Legion. Sports. NFL ...7.1 could easily be a failed module, or just a depleted module. If you have to disconnect the battery to get the car to start, you likely have a P0AA6 HV isolation fault. If you're dealing with a P3190 then you may just be depleting the HV battery, as opposed to having battery module problems (other than the P0AA6) #3 TMR-JWAP, May 2, 2022.Red triangle and lights came on while driving and was in limp mode. This happened like 5 times before, but re-started after a minute or so These sound like symptoms of a overheating inverter. Most often due to the inverter cooling water pump failing. ... whether it be a bad techstream cable or a code reader that is not Prius compatible. Until ...Oh my! | Toyota Prius Forum. Red triangle! Beeps! Curses! Oh my! Just as we were packed up for a trip up the coast to Solvang, my baby flaked on me! I put her in ready mode, and when I shifted to D, I got the dreaded red triangle, a constant beeping, and a message to the effect, "You must shift to Park; the battery will not be charged in ...Vehicle: 2008 Prius. Model: N/A. Edit: The check engine light is from a bad oxygen sensor. I have the part ordered, but am waiting on shipping. Also when the car was let sit for 2 hours the brake and vsc light were off when restarted, but the red master warning light stayed on. After about 15 min of driving the brakes and vsc lights came back on.

I stopped and restarted my 2005 prius, but red triangle and check engine light still on. Car drives the same, no problem at all. My tank was half full, I pulled to gas station and filled the tank, and the lights went away. ... Anyways I just connected the OBD II tool and it says "no codes found". Very strange. #6 aanimate, Oct 7, 2009 ...Our 2008 Prius won't start with the red triangle showing, disconnect 12 volt battery and reconnect then it will start and run until shut off. Toyota … read more. Adam Schmidt. Auto Technician. Associate Degree.Yes. The HV isolation fault kicked in again, so it probably won't go ready again until you disconnect the 12v again. Hopefully it's not the transaxle failing, but the only way to know for sure is to get the codes and subcodes . #6 TMR-JWAP, Dec 26, 2019.no drive but no codes; red triangle; will not go into drive; Chicov Junior Member. Joined: Aug 12, 2018 7 0 0 Location: Greenview IL Vehicle: 2005 Prius Model: N/A. 2005 Prius. Red Triangle and other lights on. Followed others postings. When put into Drive will not go to "D", and "Ready" and "0 mph" does not show. Battery checked and charged to ...

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Vehicle: 2005 Prius. Model: N/A. Michikazu said: ↑. Last night after leaving a friends, about 1 min into my drive I got an explosion of dash lights, the car shut down and turned off. (12V battery is fine) Red Triangle, Check Engine, The works. Pulled over and ran the OBD Fusion app and came back with P0420 and P3190.Attention automakers: You’re doing it all wrong when selling your hybrid cars. Those Toyota commercials featuring R&B singer Raphael Saadiq and hipsters grooving in a Prius V? Not ...Can anyone comment on the "Max Charge" of 4.02 please I too got a P3000 code in Dr. Prius app. After clearing the red triangle by removing the negative of the auxillary 12v batter, my prius runs if the temperature of the battery is under 110 F - I sometimes have seen 120F when the red triangle appears.I tried it on my other (working) Prius and if you start it with no foot on the brake pedal the dash looks the same, the LED on the start button stays orange and the OBD also reports no codes. The only difference is that it doesn't have the red triangle of death on.Hello fellow prius owners, I am Santi and this is my car "Six" a 2006, 209,000~ Miles, regular oil changes, and limited usage recently. with some front damage from accident that broke radiator/AC stuff. Now I am getting a Red triangle of death.

The red triangle warning light in your Prius can mean any number of things are wrong with the car. But there is no cause for concern since you can fix the ... again, will trigger the red triangle warning light. The fault codes you might get will all indicate a problem with the hybrid system. But in most cases, you will also see a red battery ...2005 Prius red triangle, orange brake lights while driving. Turned car off when I got home won't restart. Used BlueDriver code reader. ... . 2 Antilock brake codes C1953 and P1000. both codes stated "no code definition available" thank you for any help. #19 Randall 1, Jul 4, 2017. ChapmanF Senior Member. Joined: Mar 30, 2008 23,250 15,060 0 ...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.Thursday I was driving on the freeway when suddenly I got the red triangle, check engine, and brake system warning lights along with a message on the MFD that says very aptly "problem". The car did not seem to be running any different than normal. After turning the car off for a bit and then turning it back on, all lights except the brake ...The P0446 is what has been causing the check engine light to pop on every month or so for about 6 months now, and thats also what came up today. When I cleared that code, it cleared the check engine light as well as the red triangle, neither have come back on. #3 TeamPriusNewbie, Mar 3, 2024.Prius Red Triangle No Codes. If you have a red triangle with no codes on your Prius, it means that there is a problem with the vehicle’s electric system. This could be caused by a variety of issues, so it’s important to take your car to a qualified mechanic to have it checked out. In the meantime, you may want to avoid driving the vehicle ...Toyota has recalled 340,000 of its Prius Hybrid models due to a parking brake issue. So far, no accidents have been reported in Japan. By clicking "TRY IT", I agree to receive news...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 ...

2007 Gen 2 Prius Red Triangle, VSC, (!) dashboard lights! help! Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by cesar cruz, Apr 20, 2020. ... The car has 359k miles Ive used an OBDII scanner and I get codes such as P3190, P0171, P0102,P0113. A few of this codes go away and comeback everytime I scan not sure what ...

Base. Hey everyone, so a couple of months ago our 2008 (100+k mi) Prius gave my wife the Red Triangle "Problem" while she was out and about with the kids running errands. It happened while she was at my office visiting me, so we switched cars and I let her take mine home while I gave our Prius a rest as I finished out the last half …2006 Prius. Model: Five. I just acquired our second Prius, a beautiful 2002 (Gen1 in the USA) with 90k miles. On the dash, I get the red triangle of death with the exclamation point inside it. On the computer info screen, I have an icon of a car with an exclamation point in it and it reads "problem". I have connected the OBDII reader to it and ...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.blindedliberal • 3 yr. ago. Step 1: Get a OBD II code scanner and scan for codes. See what the system is saying is the issue. Take it from there. Prius has far more than normal codes to scan. You should be able to do a search online to find the text for the codes the show up.Top Repair Three: P1121 Coolant Flow Control Valve Position Sensor Stuck. Another contributor to our check engine light list of failures and a common one is the P1121 code. This code means one ...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 ...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.Normally when the car doesn't start, you can reset it by disconnecting the 12v battery for a minute and then try again. It should start at least 1 time. If that doesn't work, then you have a blown fuse. I don't know which fuses to check for on the gen 3. I have disconnected the 12v many times.A high percentage of the time a P0A93 is due to temperatures rising in the inverter because the pump has failed (or is running but pumping insufficient volume of coolant). The lower percentage is the cooling fans not running. Which of these two is the cause of the code is indicated by the INF code set which you can read in the freeze-frame data.Normally when the car doesn't start, you can reset it by disconnecting the 12v battery for a minute and then try again. It should start at least 1 time. If that doesn't work, then you have a blown fuse. I don't know which fuses to check for on the gen 3. I have disconnected the 12v many times.

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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.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, and lo and behold had a bad hybrid battery. Those are just my experiences.2005 Prius with about 160k miles. Red Triangle and the P3000 code came up. Powers on with all the dash lights and monitor, no start though. Could it be...2001 Prius, Red Triangle, Check Engine Light, PS + Battery+Car red exclamation alert. Discussion in 'Generation 1 Prius Discussion ... A code reader is needed to do that. Most generic ones are useless on a Gen 1 Prius, because they will only show codes from a couple computers (engine and possibly brake) and totally ignore the other computers in ...Unfortunately, unless you have a code reader on-site, getting codes read on a Prius that won't move is impossible. Your best solution is to disconnect the 12V battery to clear the codes as follows: Remove the mat. Remove the cargo tray cover. Remove black plastic cargo tray. Remove cover over 12V battery in the passenger rear corner.I have a 2007 prius with almost 150k miles and the big triangle warning light came on a few days ago. I ordered a scanner and finally was able to pull a p3000 code from the Dr Prius app. However, I know that there are sub codes for this, but I don't have any way to read them at the moment.2006 Prius. Model: ----USA----. I have a 2006 Toyota Prius with 182,000 miles on it. Yesterday when going to lunch I started my car and the Red Triangle, Check Engine, Circle with Exclamation Mark, the little red car with exclamation mark on the display and VSC lights all came on. On my way home from work I stopped and picked up a new 12v ...It flashes because the vehicle security alarm is sounding and turns off automatically when the alarm goes away. 11. Electronic Throttle Control Warning Light. Electronic Throttle Control Warning Light; This dashboard symbols illuminate to indicate a malfunction in the electronic Throttle Control system.2008 Toyota Prius with ~270000 miles on her. Today randomly the red triangle of death popped up along with these 2 codes according to auto zone.2008 Prius. Model: N/A. 2008 Prius 230,000 just purchased months ago. Just drove down Mount Washington, which pushed my traction battery all the way full, almost never happens. Couple hours later while on the expressway, the Red Triangle, CEL, and red car with exclamation point came up, I think I was in cruise control because it hesitated.Our 2008 Prius won't start with the red triangle showing, disconnect 12 volt battery and reconnect then it will start and run until shut off. Toyota … read more. Adam Schmidt. Auto Technician. Associate Degree.The Red triangle of death is a major fatal fault in the car. Usually because either the inverter coolant pump has failed or the hybrid battery has failed. ... You must get a Prius capable OBD code reader to harvest these codes that will tell you exactly what the car is unhappy about anything less is a waste of time imho. ….

During driving the fuel motor stop working and the car starts to limp. I stopped the car, turn it off and on again, then all warning light turn on (check engine, VCS, ABS, and red triangle). The car moved but it seems like the main battery stopped working. I read online and I used Toyota Techstream. I got two main codes P3000 and P3030.Hello out there...I am having a hell of a time trying to fix this 2008 toyota prius from showing the red triangle, and multiple icons on the main screen, and a new icon of a red car exclamation and red icon of the main battery. I have opened the hybrid battery and changed all low voltage cells with good used ones.If you see the red triangle warning light on your Toyota Prius, it means that there is a problem with the vehicle's hybrid system. There are a few things that you can do to troubleshoot the issue: Check …> Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, Maintenance and Troubleshooting ... with 134k km in the clock and I have all the lights up on the dashboard (red triangle, check engine, ABS, brake) and the only code what I get via Torque Pro is P0560. I purchased VXDIAG and Techstream from Amazon and it on its way now. ...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, 2020.2002 Prius. Model: Base. Any information would be much appreciated. I have a 2002 prius with 208000. Still get's good mpg, seems to run great. I replaced the HV battery with a few months ago. About 2-3 times a month the red triangle will come on. I pull over, turn the car off and on and it drives fine again for a while.Jul 16, 2018 · I ran car diagnostic on battery, 12.4v electric only, 14.4v gas engine on. Nothing looks physically tampered with on auxiliary. Then I checked with autozone's scanners and it read the P0A93 code twice. I am baffled as to why it happened after my window replacements and not before. How do I clear a red triangle of death light after repair has been made? [2008 Prius]. Took it to a Toyota hybrid expert. He pulled a code for the inverter Coolant pump. Bought a pump from Toyota and replaced the bad one. Red triangle stays on. 4 months later I decided to pull the battery terminal for a bit and reconnect it.The answer is no. Driving a Toyota Prius when the red triangle warning light is illuminated is not advisable. The red triangle warning light, often called the 'Red Triangle of Death,' indicates a significant issue that requires immediate attention.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. Prius red triangle no codes, Everything Toyota Prius! Currently private to support the proposed changes to third party apps. ... OBD2 codes, have no idea where to go from here My 2009 gen 2 prius runs fine as far as i know, other than these codes that came up. Check engine light is on and every now and then a red triangle appears for a brief second. Car sometimes smells ..., On June 20 it stopped cooling almost entirely and I got the red triangle with the exclamation flashing with the word "problem" and beeping. I took it to the dealer who checked it and said that I was out of freon ($250). They said there were no codes and they didn't know why I had the red triangle. It cooled again, but was still intermittent., Prius Red Triangle No Codes. If you have a red triangle with no codes on your Prius, it means that there is a problem with the vehicle's electric system. This could be caused by a variety of issues, so it's important to take your car to a qualified mechanic to have it checked out. In the meantime, you may want to avoid driving the vehicle ..., cptjames said: Brake, (!), ABS, VSC Lights Warning Lights Popped On. Almost home when 4 warning lights (Brake, (!), ABS, VSC) came on Friday after driving about 45 minutes from work (around 13-15 miles). 2006 Prius with 133K miles. Brakes working. Found this forum and took car to garage next day. 12 volt battery replaced (garage owner said it ..., 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., 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 ..., Hey guys just I have a question so I have a 2008 Prius and I just replaced the 12volt battery on Monday worked just fine the car was able to drive... Forums. Search Forums; ... came on and vsc no abs also well red triangle and I got these codes on the self diagnostic from the computer do they mean Attached Files: DB62BB17-99A1-4018-8BC4 ..., 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 ..., ok got some codes finally with the TIS.Not good ones i think 1 Hybrid Control POAA6 Detail Code 2 - 526 2 ABS- C1241 - Low or High Battery 3 ABS 1310 Detailed freeze 156 HV Malfunction, Capacitor Mode -OFF 4 ABS 1378 Capacitor HV -OK, also by dr prius and torque cells look good , impedence? was 19 across all 14 Gateway showed a B1271 which i took was from when i replaced the meter screen, "not ..., Vehicle: 2007 Prius. Model: Touring. Hi @Danni, That red icon in the upper left corner of the multi-function display means you're experiencing low oil pressure, which can very quickly lead to the death of an engine. I would recommend NOT driving the car at all, or even starting it again, until the oil level is checked and corrected., > Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, ... Attachments are working again! Check out this thread for more details and to report any other bugs. Red triangle, no codes. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by mohater, Aug 13, 2020. Page 2 of 2 < Prev 1 2. mohater …, > 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. Red Triangle no code. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Hakam, Apr 10, 2023. Hakam Junior …, The red triangle warning light in your Prius can mean any number of things are wrong with the car. But there is no cause for concern since you can fix the most common problems that trigger the red triangle light for less than ten bucks., 2008 Prius. Model: N/A. Hi all, I have a 2008 Toyota Prius. I was coming home yesterday and right as I turned into my apartment the VSC light came on along with the big red triangle. I drove slowly and parked. When I tried to turn on the car today it turned on, windows go up and down, overhead light turns on, and all these lights (see subject ..., What is the Red Triangle on a Prius? The red triangle on a Prius is a warning light that indicates a problem with the vehicle. When this light comes on, it means that something is wrong and needs to be addressed. The red triangle is typically accompanied by other warning lights, such as the check engine light, and may also be accompanied by a ..., Apr 10, 2020 · 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 the HV battery's ECU. When it reports ... , The "Prius red triangle" is an iconic warning symbol that has caught the attention of many Toyota Prius owners and enthusiasts. When this illuminating triangle makes its appearance on the dashboard, it often induces a sense of urgency and concern. Its bright and vivid color is not just for show; it's Toyota's way of alerting the driver ..., Florida. Vehicle: 2007 Prius. Model: ----USA----. Hi guys, I habe the P0A80 code in my prius and I vheck the modules volt and fans and everything is working, as you see in tje picture, it say that the block 1 is low, but, all the voltages are 7.6 and up, do you thing that I have to change the sensor in the image? Need your advises one more time ..., Vehicle: 2005 Prius. Model: II. So I woke up this morning with just the Red Triangle lit up, I had to drive 75 miles to work, did the drive, reset mpg and averaged over 46 mpg for the ride (good for me). I took the car 10 miles to lunch and back to office. The whole time the Red triangle was still lit., #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..., Red triangle, MIL, VSC, (!) with codes? Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Jason Antman, May 3, 2017. Jason Antman Junior Member. Joined: Nov 19, 2012 20 3 0 ... Founded in 2003, PriusChat has been the go-to spot for Prius, hybrid, and EV discussion for over 10 years. PriusChat is the one of the largest ..., Within the past week, my 2006 Prius (251,000 miles) started exhibiting a problem involving the Red Triangle. The triangle would come on for a few seconds, and the video display would show the not-really-very-helpful message "Problem", but there was otherwise no perceptible change in the car's behavior., I tried the Dr Prius battery tests, drove up and down some hills to get some electrons pushing around. I ended up with a new red triangle. the center temp sensor was in the high 130's, while the others were at 120..at one point I got a message that the inverter was too hot to force charge. Codes are P3000 and PA080., Prius Red Triangle No Codes. If you have a red triangle with no codes on your Prius, it means that there is a problem with the vehicle’s electric system. This could be caused by a variety of issues, so it’s important to take your car to a qualified mechanic to have it checked out., Orlando, FL. Vehicle: 2008 Prius. Model: N/A. Re: 2008 Prius Red Triangle light or bad ju-ju in Prius. We have had a similar situation with our 2007: This all started the day after we had taken the car to Toyota for water pump recall;While driving an orange triangle,break light,circle with (!) & a car in a red square on the touch screen all ..., Toyota has recalled 340,000 of its Prius Hybrid models due to a parking brake issue. So far, no accidents have been reported in Japan. By clicking "TRY IT", I agree to receive news..., red triangle warning light + car won't start. Discussion in 'Gen 2 Prius Main Forum' started by cali_boi, May 12, 2010. cali_boi New Member. Joined: May 12, 2010 1 0 0 Location: ... Founded in 2003, PriusChat has been the go-to spot for Prius, hybrid, and EV discussion for over 10 years. PriusChat is the one of the largest privately-owned car ..., > 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 ..., Hi all, I bought a 2007 Prius a few months ago for cheap off my neighbor. It had a reconditioned battery put in about two years ago. Last week it showed the red triangle of death, and I got a P0AA6 code on my reader. Scheduled it at the mechanic for this week, but I had to clear the code in order to put it in drive to get it to the shop., Prius battery cell - https://amzn.to/314cBpJBluetooth ODBII reader - https://amzn.to/2LNt660You can use my referral code to get 1,000 miles of free Superchar..., Hello. First time posting please forgive me. I've not had my prius (2007) long but trying my best at self maintenance and appreciating reading this forum. I've got a red triangle of death and on plugging in the laptop have the following errors codes: - P0A84 Hybrid Battery Pack Cooling Fan 1 Control Circuit Low. - P3000-123 Battery Control System., 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., 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 …