Prius (Gen 1) :: 2001 - Keep Getting Code P3001 With All The Lights / ECU Failure
Dec 27, 2012
I have a 2001 prius that I bought from a garage . To get to the point, it had a dead battery pack so I put a good used one in. It will start and run but I keep getting code p3001 which indicates a bad battery ecu. I replaced the battery ecu to the original one that was in the car ,but I still keep getting the code along with all the lights. I did some looking and was told to replace the HV. ecu which I also replaced ,but it did not solve anything. I unplugged a harness while it was running and than got code p3100 which indicates HV. ecu failure.. So I am not sure what is going on ,talked to toyota tech and he said it does not need to be reprogrammed ,but you have to buy a new one as the vin # in the ecu will not match up..
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My 01 Prius is not charging the 12V battery and I have error code P3001. Everyone on here said P3001 is the HV battery ECU. (which I replaced with one from the Junk Yard and still get the error code)
I charged the 12V battery over night and Autozone says that its ok. They tested it with a little machine. The only other thing I can think of is that the Inverter DC-DC converter part is bad. How I can test that? (is there a way other than replace the inverter?)
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I need assitance on the following diagnostic report. My prius shows:-
1. Red triangle with exclamation mark,
2. On the LCD red car with exclamation mark,
3. ABS sign - on and off.
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While driving home last night the Red Triangle, CEL and the Hybrid Warning lamp, (on the MFD) all lit up. The cruise control also shut down. We stopped and checked the manual to identify what the symbols meant. We were approximately 90 miles from home, drizzling rain and it was about 60 degrees.
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So the other day, jump in the car to head home from my exercise class and the dash is all lit up with warning lights including the exclamation point, but other than that, the car seems fine. Decided to drive the 2 miles home regardless and then drive carefully to the dealer another 3 miles away. They tell me the HV battery failed and they won't be able to get a replacement until early April. So I'm driving a free rental car which is fine. New battery is covered under the warranty. Car has less than 60K miles on it.
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I have a 2007 Prius with 92000 miles. All dashboard warning lights lit up the other day. Had it towed to the Toyota dealer and they first replaced the HV ECU. Now they are saying the traction battery needs to be replaced. They have had the car several days but they put me in a free rental.
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I have a 2006 Pri with 194,000 miles on it that has been dead reliable & owes me nothing really, now developing a serious problem. Only when it is below about 10 deg F I will get total failure of the power braking system on or shortly after startup Has happened on 3 days this winter. ABS light, Brake warning, continuous high pitched beep (very annoying warning the driver of immanent death!
When this happens I get almost no movement on the brake pedal. It's rock hard & acts pretty much like loosing power brakes on any car (ie. you will eventually stop, but not a safe condition). There is no transition to this condition. It's either "everything normal" or total failure. Brake fluid reads half way between min & max and looks clean, no sign of moisture, but has never been flushed.
The last time it happened I was leaving work, couldn't swap cars... so I drove straight to the dealer (white knuckled). Dealer calls the next day saying it's the Brake Actuator needing replacement. I told them I wasn't spending that & to look again for a cheaper problem like Fluid, 12v battery, Relay...
No dice. They confirm it's the actuator.
The code they read is C1256. They "checked resistance at actuator pins & found high resistance at pins 1&2." I'm thinking about just topping up the fluid a bit more, or getting the fluid flushed & changed, or changing the 12v battery (I need to check voltage on next cold morning), or just not driving it at those temps & hoping it doesn't get worse.
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I own a 2006 JDM prius with 323,000 km. The inverter coolant pump failed recently (got P0A93 code and no agitation in coolant reservoir). I ordered a replacement on eBay and am awaiting arrival. I may need to do some light driving in the in the interim and am thinking about installing a 10 inch fan in the space between the inverter/transmission and radiator to keep things cool. Is this wise or should I just let the car sit until the new pump gets here?
Also, I am burning oil...I usually have to top up 1 to 2 quarts in between changes. Is there anything I can do without tearing down the engine? A friend of mine suggested using Lucas oil stabilizer the next time I change oil...could this have any negative implications?
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I drove my 2005 Prius to work and parked, left it overnight, then the next night went to take it home and the fuel and gear lights are blinking, and the car won't start.
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07 Prius. So I get the triangle of death, car shuts down, and throws the A093 code indicating pump failure.
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My 2007 Prius with 162k miles had an Inverter Coolant Pump Failure Monday 6.5 hours from home when my wife was driving it home from a trip. Red Triangle, (!), vsc, and check engine light. She was able to make it about 20 minutes to a dealer where it was diagnosed. Luckily no further damage was done to vehicle. Yes, she should have stopped but continued on since car was driving OK.
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I just wanted to share my story here. Last week on a routine trip on I-5 warning lights started flashing indicating hybrid drive failure. The car automatically shifted into neutral and I was limping along down hill. Luckily I saw a downhill exit and had the foresight to turn off where to my horror I discovered that my brakes didn't work. So I had to coast to the bottom of the hill and again made a quick decision to turn into a slight uphill side street to force myself to a stop with the parking brake. At point the car completely died and I couldn't even shift into neutral to push it.
After towing it to AAA and avoiding a collision on I-5 (if I pulled into the shoulder without breaks I likely would have crashed into a retaining wall) and then not being smacked after I got it to a stop I was pretty shaken...I'm lucky to be alive.
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My 2008 Prius (111,000 miles) had all the panel alarm lights go on and lost power while I was driving on the freeway. After turning off the vehicle and letting it “rest” for 10 minutes, it restarted with only the red triangle alert light remaining on and was able to drive to my dealer service (about 40 miles) with no incident. The diagnostic code indicates that the inverter has failed, but the technicians are not able to confirm that this is the problem, since the system is now running. I was able to drive it home with no problems or warning lights. As this is a $4,000 part, I would like to know if this is a likely, or even possible, scenario for an inverter failing, or could it be another problem? Note: 3 months ago the auxiliary battery was replaced following the same circumstances.
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The power steering on my 2003 Toyota Prius has been slowly deteriorating (very difficult to get out of parallel parking spaces, for example) until in suddenly cut out all together as I was turning in a parking lot two days ago. I put the car in reverse to try to straighten out, and the problem was immediately solved. The car was fine for the next 12 hours (and ten miles) until the same thing happened again... and fixed itself again.
I realize the 2001 was recalled because of power steering issues... but this does not seem to apply to the 2003.
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My 2007 Prius with 176k had the warning lights on the dash. I finally got the code read and it is the P0A80 code. The 12 volt battery seems good, it is about a year and a half old or so. That was the only code.
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My car is a Prius Plus 2012.
One day, I decided to go to a mechanic to clean the EGR pipe. Only the pipe, not the whole EGR. It was an extremely simple operation a mechanical one, not electrical etc. Starting from that day, when I go with the car, from time to time, check engine lights up. For a fraction of a second to up to 2 seconds then it disappear.
The car behave itself without a problem. But still the on-off check engine is really annoying.
So a went to the dealer. Put the car on tester.
Result: no code error !
I went to another garage , put another tester on the car, no error..
How can I actually see what the error is if nothing is stocked in the ECU of the car?
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Gen II Prius, 151000 miles, HV battery died (rapid charging / discharging, cooling fan on high constantly, etc) Installed remanufactured HV battery. Connect it all back up, test drive, get the triangle of death, VSC, amber (!), and MIL on MFD. Car continues to drive normally until shutdown, upon next startup lights still present and won't shift into D or R only N. Pull codes, POAA6 is showing.
Code doesn't reset with car in ign on (not ready) after 60 seconds, make car ready and shift immediately to N. Code resets after 30 sec. Have done this trouble shooting 4 times and code always resets with ready on and in N. This points to the HV 'leak' being either in the wiring harness or the inverter. What I can do next in order to figure out which one?
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My car was working fine except for occasional no dash lights. Unfortunately where my dash lights don't work sometimes I can't see my gas gauge and I ran out of gas today. I manage to make it to the gas station on battery power I presume. Filled the tank up with 11 gallons and the car seemed to work fine for the remainder of my trip(about 5 miles). So I parked at my destination and went inside for 30 minutes and then I went back out and started the car. I attempted to clear the out of gas error code and all of a sudden a whole Christmas trees of lights popped on my dash. I rescanned and these codes were read out
U0293
u0100
u0111
u0293
p0a1d.
History : I had the coolant pump inverter changed 2-3 months ago by a mechanic and hybrid battery and battery ecu changed 2 years ago by myself.
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Driving home today, my prius threw the triangle and all the other warning lights. Scanned with my scan gauge got code u0100. I was only a mile from home so attempted to drive it. Car made it 1/4 mile and then died. I had it towed to the house and checked the grounding wires going to the engine and transaxle. The Tranaxle grounding wire was loose so i pushed it together tightly. The car now runs on main battery only, the ICE does not fire up. All warning lights are still present. Nav screen says problem. 12v is good.
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I was driving my 2005 Toyota Prius and all of a sudden some lights came on the dash. The orange check engine light, The big red Triangle with an exclamation mark on it, the orange VSC symbol, and the orange exclamation mark all at once. I also heard the fans in the back seat kicked in which I never heard before. It felt as though the car didn't have much acceleration. I took it to the dealer and they had it a whole week trying to figure out what it was wrong. They said they got the P3000 INF 123 code from the car which they said the HV control ECM for $2000. Needless to say I don't want to pay that! I found used ECM on ebay for $85 and I bought a scangauge 2 . I pulled 2 different codes out with the scan gauge 2 P0A80 and P3021.
Do you think the dealer diagnosis is right? What does the codes I read out mean?
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I am about 50 miles from El Paso and 350-400 from home, broken down on hwy right now, all the dash lights lit up and my scan gauge says p0a93 the inverter pump thing. Nothing has been worked on or messed with so i should have no air in the lines etc
Can I drive it like this to El Paso or home? Car seems to be running fine. Car is under toyota warranty so i don't want to screw anything else up.
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