Prius (Gen 2) :: Warning Lights With Codes Diagnosed
Mar 10, 2015
A few months back, my wife (2007 Prius) was telling me that she had some stuff going on with it. I found the diagnostic test for the 12 v battery and it failed. So I replaced the 12v and everything was fine until about two weeks ago. Two weeks ago, she got a check engine light. Then she stopped the car and when she fired back up again, the light was extinguished. So, I figured no big deal. Yesterday, she went to leave and the car was lit up like a Christmas tree. So she took my truck to work and left me a note about this. She figured I would drive my garage queen Vette... but I chose to drive the Prius to see if I could figure out some things, which I did.
Here is everything that I noticed thus far:
First, I will start with lights. Brake System Warning light is on, Check engine malfunction indicator is on, Red triangle with exclamation point Master warning light is on, VSC Vehicle stability control system warning light is on. Then on the tv screen panel, the Hybrid system warning light is on. I ran down to O'Reilly's to see what codes it pulled, and this is what I have: C0200 Right VSS, C0205 Left VSS, C1259 Regenerative Malfunction, C1310 Malfunction H/V System, P1121 Coolant flow control, X2 Valve Sensor Circuit stack, P0A80 Replace Hybrid Battery Pack, P3015 Battery Block 5 Becomes Weak, P3016 Battery Block 6 becomes weak, and then a few more repeats.
What I have looked at and what I have noticed/experienced thus far; At the beginning of the day yesterday, when stopped at a light, the engine would turn on and then shut off frequently (approx every 20 seconds). A lot more than normal. As of today, the engine just stays on constantly... even after the battery indicator shows full, it stays running. The battery cooling fan stays running. Sometimes the car lacks power at start out, When slowing down, I tried selecting the "B" as I know that it would normally work as a trans brake and regenerate power, it doesn't seem to be doing that and it seems as though the tranny doesn't know exactly what to do. I checked the 12v battery again through the diagnostic and it says it was at 12.2v so that should be good. I noticed that the battery indicator will show full and then just drop down to one bar and then go back up to full and stay at full for a while. Lastly, I saw the inverter check and I did that by turning the car on (ready on) and I can see the fluid moving around and I can feel it in the tube and the fluid level is good.
It sounds to me as if the ECM/ECU may be bad. Or maybe the HV battery. I was leaning towards the ECM/ECU just because of all of the different fluctuations, but with electrical stuff, it could very well be the battery.
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Here is my situation- back in 2014 I had a local mechanic replace my HV battery and 12V battery after the Red Triangle of Death. Well yesterday that triangle reared its ugly head again! (and cruise control stopped working) Since this mechanic has 3 year, 36,000 mile warranty on all parts and labor, I figured this should be covered. I drove my wife's car to work today, then after work drove the Prius over there to find them closed until Friday!
So I had the guys at Advanced Auto read the codes for me and got P3006, C1213, and C1259. I have done extensive reading and researching, much of it on this site on these codes, but my main question is this:
I commute about 20 miles one way, and on certain days my wife commutes 10 to 22 miles the opposite direction. There are 3 days we go opposite ways this week, and at least one that is completely unmanageable without 2 cars.
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I have a 2005 Prius with 98,000 miles on the clock, two weeks ago, the engine check light came on and I plugged in a "V-Checker OBD II reader.
Read the code P0420 and reset. Don't get bogged down regarding the P0420 code as this is just background to what happened next. The P0420 code has not come on again, reset was done last week.
Removed the OBD reader and noticed the VSC+ABS+Braking+Handbrake lights on, car drives OK, braking not quite what was, notice kind of "afterthought" when the brake pedal released. The Ready light does not come on, but the car starts fine and drives . I am sure the OBD reader caused the VCS etc problem, because there was no issues in that area until the OBD reader used, and in the minute or so of plugging it in, the VSC lights are on.
Code now present are C1203 and C1345.
Tried the Pin TC + CH pin procedures without success. Took to an independent Toyota Specialist, he did manage to clear the lights, but they came back on within half a mile during test drive. Could not clear lights after that. He recommended changing the 12V battery, which we did, but did not clear lights.
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I bought an '04 prius about a month ago and it has already been at Toyota for over a week. It get's the red triangle, the yellow brake light, and the hybrid red car on the screen and says Problem! I took it to the dealer and he pulled the codes P3009 and info code 526. When you open the hood, the inverter overflow tank is boiling, so it must be overheating. I have read about the pumps going out and when the engine is cool there is turbulence in the overflow tank.
The guy I bought it from did say he had replaced the water pump recently. Toyota kept it for a week trying to replicate and couldn't, and even had the regional rep look at it.
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Upon turning on my car and driving a few feet I had the Red Triangle of Death, Yellow VSC, Yellow (!) Indicator, and check engine light and I'm trying to figure out where I should start working on the issue.
The Codes were as Follows:
P3000 (subcode 123)
C0200
C1241
C1300
C1310
C1259
A little history:
About 3 months ago I had an issue with the hybrid battery and replaced a battery cell which stopped all issues. About 2 weeks ago I replaced the coolant inverter pump and until today there has been no errors, CELs, or any negative performance.
This is a Gen II, 2007 prius with almost 200k miles.
Unfortunately I had plans that I could not reschedule and made the drive to the location and drove back. I had serious battery drain and it was almost always at 1 bar of battery, sometime reaching up to 2 bars. There is also the sound of a fan coming from the back seat, which I assume is the HV Battery fan, but it is on regardless of if I have air conditioning or not. A/C is working fine. When I returned home the battery charged almost up to full bars, but when I came to a stop the battery drained in about 10 seconds leaving me with very low power to keep moving. After that whenever I slowed down the teal arrows showing a recharge of the battery were gone and the battery seemed to refuse to recharge.
Steps taken so far:
I topped off my engine coolant in the front reservoir as it seemed a little low, but I didn't add much before it was full. The other reservoir near the engine was just about full and taking off the other cap showed coolant filled to the top.
I tested the 12v battery with my voltmeter which came back reading 12.7.
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I just bought my 2006 Toyota Prius about a year ago in 2009. About a month or two ago, the check engine light came on and stayed on along with a big red triangular warning light.
I brought the vehicle into my local Toyota dealership so they can diagnose it.They told me that they had 3 or 4 different "codes" coming from the machine when getting the signals from the check engine light. All the codes were related to the cooling system. They said that they felt that there was "debris" clogging the pathway for the coolant flow throughout the engine. They had recommended a "coolant flush" for the hybrid side as well as the mechanical side.
So I had them perform the coolant flushes. After leaving the dealership that 1st time, the check engine light came back on the next day. I called the same dealership and explained it to them. They asked me to bring it in again.
SO I brought it to them a 2nd time. They diagnosed it again. They told me they came up with 2 of the SAME "codes" and 1 that was different, but ALL the codes were STILL related to the cooling system. They explained to me that something was preventing the clear flow of coolant throughout the engine. And since the thermostat was the only major obstacle, they recommended that I replace it. Well, I did. And after I left the dealership that 2nd time, I was praying that this was the last of my Prius issues !
The check engine light came back on the next day. The service person invited me back and did not charge me this time because it was the same issue. I told them that I am not in the business of randomly changing parts on my car unless I am absolutely sure I know exactly what the problem is. HOWEVER, this time they kept my vehicle for a good week or two. Running it through various diagnostics tests overnight here and there.
They finally came out and said that they feel that I have a coolant system leak coming from my engine and that I need to replace my head gasket which is responsible for sealing the engine.
During my 1st visit, the codes were P0117 and P1150
During the 2nd and 3rd visits , in addition to those, there was one additional one that came up that I will post as soon as I find it !
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2008 Prius with @ 70K. Never any problems.
My wife goes and has the oil changed at one the 'stay in your car' 10 minutes changes. They change the oil and replace a couple burnt out bulbs. Drive home the 2 miles to the house and gets ready for work. Leaves for work and sees the 'check engine' light on. Goes back to the oil place, they throw it on the computer and read a PO101 and PO171 code. "has to do with with the fuel mixture". She goes to work 11 miles and back. This a.m.
1. Check Engine with !
2. VSC
3. another light with !
4. Red Triangle with !
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I've been having issues with my beloved 2003 with a little over 130k with warning lights going on and off. I went to O'Reilly's they gave me the codes P3130 and P0303. One of codes states "misfiring on all cylinders," they didn't have a description for the other one.
Dealership won't tell me anything about what the codes mean. The warning lights are an exclamation point inside a triangle, check engine, and what looks like a thermometer in red.
Just got the oil changed a little over a week ago, dealership said they didn't notice any problems. Warning lights came back on last Thursday and just disappeared about an hour ago.
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2008 Prius recently lost acceleration (would only creep along) and soon stopped. Warning lights - red triangle with !, red split car on mid, check engine - came on. About 10 minutes later the car started and allowed my daughter to creep the last 1/4 mile home. DTC's - P0A3F and P2196. Was recently gassed up, so checked gas cap, thinking it may have set the oxygen sensor code. It was loose, tightened it. Pulled the EFI fuse for a couple minutes to reset the codes (not sure it did). Put the smart key back in and warning lights came on again. May have to take to dealer, but would like to have some notion as to what's causing this. Possibly related -- a couple weeks ago the 12V battery got drained overnight. Pulled it and recharged and everything seemed to be running fine.
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Have been having cascading problems since installing PIS 10kWh system in April. Early system shutdown, failed BMS boards, then triggering of Prius warning lights. The latter required disconnecting the 12v battery to 'reboot' and cancel them per Robb of PIS. But then, when attempting to do an electrical load test using air con & other accessories, we triggered several yellow warning lights that do no go away with a reboot. Have been told that we need to have a dealer read the codes to troubleshoot.
Read more: [URL] ....
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I have a '10 tiguan awd wolfs. The other day I was stuck in traffic and the temp started to run away. Got home and a few checks. No coolant leaks and the 40A fan fuse is ok.
I did a scan and vcds found this:
006470 - Control Module 1 for Coolant Fan
P1946 - 000 - Defective
From what I've found the new(er) style control module is no longer a small brick; it's located within the main fan motor. I dropped the rad assembly, installed the new one and cleared the dtc code in the engine control module. Immediately the code comes back and the fans never kick on.
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So my car has been running a little rough for a while(about 6-8 months now) and the CEL has been going off sporadically. The clutch went out last week and has been replaced fixing a large part of the issue, however the car still feels kind of rough in the 3k rpm range and up. I feel a strong vibration when I step on the throttle and the car hesitates to build power. On cold starts the car also has a rough idle where the rpms are hovering above 1k for a few minutes.
I recently took the car over to AU Tuning where they gave me a free diagnostic(Pacific German was charging me $100 just for a diagnostic!?). They told me the throttle body might need a cleaning but I was better off replacing the whole unit. They also discovered my air intake hose torn near the diverter valve and a 5 bar Fuel Pressure Regulator that was pressed in for added pressure.
Given that I just replaced the clutch, funds are tight and I don't have the money to replace everything right away
I should mention VAG-Com reported the following codes:
P1137 Fuel Trim: Bank 1 - System too Rich,
P1297 Pressure Drop between Turbo and Throttle Valve (check D.V.!)
P1171 Angle Sensor 2 for Throttle Actuator(G188) Implausible Signal
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These warning lights are lit but my code reader (Actron CP9180) shows 'pass' meaning no fault codes. I had a similar thing happen about a year ago Before I had my own reader) and the cause was a faulty speed sensor on one wheel. Since then all 4 hubs have been replaced. Does this sound like the brake module?
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A 2001 Prius is getting a warning triangle. No check engine light, and with my OBDII scanner, it shows there are no codes. I can erase and the triangle goes out, but it comes back on eventually. It seems only if the car is driven a long time/distance it comes on, indicating some heat issue perhaps.
The 12v battery is good, the radiator coolant is good, the inverter coolant is good and flowing. The washer fluid hose is broken, could THAT give the death triangle? There must be a way to have the cars display whats wrong with the fancy software and touch screen?
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I had just picked my kid up from school, as I turn out of the parking lot my A/C stops blowing cool air, I check the A/C screen and it still says it's set on High with temp at 68. However, it is blowing very low with warm air. Seconds later the dash lights up with numerous warning lights. I'm on the highway and I'm able to gather speed, but each time I do I hear the engine revving like crazy. We only live a few miles from the school so I am able to make it home. Once home, I turn off the car and turn it back on. The only warning lights displayed now are the red triangle and the yellow check engine light. I turn the car off, pop the hood, I check the belt and it was fine. I checked the oil and it seemed fine. I check the coolant overflow and it was empty.
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Master warning light came on, I turned the car off and the engine would not start again. it had engine codes p3105 and p3115. the p3115 is the code for the main relay, even with the chilton manual i cant locate the main main relay. also the hybrid battery is dead. Where the main relay is? if and how to charge the hybrid battery?
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My 2003 with 150K miles has had the blinking A/C light problem for the past year or so. I ran the diagnosis, got the 22 code, so it seems the clutch needs to be adjusted or replaced. If I leave the A/C on Max with the fan on at Max, the A/C works fine (for at least as long as my daily commute, about 40 mins). Once I turn the fan down or turn Max off, the lights start blinking within 5-10 minutes and the A/C doesn't work. Is this consistent with the clutch problem?
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I have an '01 Prius with ~80,000 miles now. I bought it with a known brake issue, however upon further diagnosis, it appears the problem is with the Brake accumulator.
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Just used Carista to switch to a single beep when reversing. Whilst I was in the app, just out of curiosity, I checked for error codes. B1423 appeared. I didn't expect to see anything as the car is brand new.
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I have around 68k miles on my 2009 Prius and just got a CEL, the Red Triangle with an exclamation point, an intermittently occurring VSC light, and an intermittently occurring yellow circle with an exclamation point on the upper dash display. I also have a car shaped icon with an exclamation point on my main display (ICE?). My scan tool shows P0093 as the only code.
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I bought my Prius after I tested the car around town and on the highway and went smoothly. I drove the car about 200 km after the warning came on board, high temperature and cold engine warning (red and blue). Stopped the car and I found nothing to be hot (engine or inverter).
I rebooted and the errors disappeared but reappeared and on the highway (120 km) car no longer accelerate, pedal did not respond.Stopped and restarted repeatedly trying to get as close to home and a Toyota service. High and low temperature have appeared and disappeared after stopped and restarted. Warnings appear together, none or only one of them.
But after 600 km appeared turtle on board and the car stopped. I was unable to start. They came from Toyota and were able to start with another auxiliary battery and ran 10 km with a tester on the dashboard (at full throttle and the car accelerated 1 km / sec until it reached 60 km / h then accelerated normal to 125km/h. When he put the foot on brake and after that tried to accelerate again the pedal was non responsive and the car stopped again and they towed it.
Next day they told me that the ECU is faulty (the one located behind the glove compartment) together with the Auxiliary Battery.(1100 Euro ECU).They told me that the temperature sensor is 200 degrees Celsius with a cold engine.
We towed the car to another service closer to home (1300 km) and asked a second opinion telling me that is defective inverter. I decided to buy an ECU. (220 Euro/ second hand)
Meanwhile my traction battery died after they tried to start the car many times.
After I charged the traction battery (one module at a time), whole battery shown after charging 301 V.
Now I have the following :
P3120 HV transaxle / Wire harness
INF. Code 249 (Open or +B short in motor temperature sensor)
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