P3101 ошибка toyota prius

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   2003 Prius

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   My parents’ Gen 1 2003 Prius, at 99,030 miles, wouldn’t start, and I thought I’d share the problem description and the fix that worked for me, for others who see the same symptoms.

   My Mom called, saying the car wouldn’t start. I first noticed that the dome light seemed quite dim. I tested the 12V battery, and it was at 9V (and 8 years old). I replaced it with a NAPA Optima BAT N9951RYEL (the conversion from «pencil-post» to standard terminals had already been done). I did have to re-bend the battery tray to fit the new battery length.

   The car then would «start», and run for about 8 seconds, and then the engine would die with pretty bad knocking, and the check engine light would come on. I soon learned (from PriusChat postings), that the engine had never really started, and that MG1 was simply driving it for the entire time. I re-tried this 4 times, and then stopped, concerned for the SOC (State of Charge) on the HV battery.

   I pulled up the DTCs from the ECM and the HV ECU, and found P3191 and P3101 (inf 205). P3191 is ‘engine «dose» not start’. Given that the car is at 100K miles, I bought a new set of NGK Laser Iridium spark plugs («cause, lasers, right?»). I also picked up some MAF cleaner, throttle plate cleaner, and starter fluid.

   I pulled off the air filter box, and inspected the MAF sensor, which was evenly coated with a layer of blackened dust. A quick spray of MAF cleaner restored it to a shiny state.

   Next, I cleaned the throttle plate pivot points. The throttle plate didn’t look too bad. I did note a slight amount of clean engine oil at the bottom of the intake manifold, but it’s hard to see how this would be pulled into the cylinders. I didn’t have a chance to clean it out, but I think with the right custom tool it should be possible to soak it up with a shop paper towel through the throttle body opening. This is supposed be due to engine oil overfilling, but the car last had an oil change 6 months ago, and has been running fine since then.

   Finally, I replaced the spark plugs, which didn’t look all that bad for 100K miles, but definitely needed replacement.

   Even though the SOC from the HV ECU was reading 10.5%, which I was sure meant that MG1 wouldn’t be able to turn over the engine, I sprayed one short burst of starter fluid in, started the car, and bingo! It started and ran with no check engine light. The starter fluid probably wasn’t necessary at all. Very shortly afterwards, the SOC was reading 58%. I wonder if SOC is not very reliable until the HV ECU and the HV Battery ECU have seen energy flow into or out of the battery.

   I really think the MAF sensor was the primary problem, but I can’t be sure.

   Also, one other note: with a Tactrix Openport 2.0 connected to the OBD port, shifting the car into «D» while running, with the driver’s door open, causes the red triangle of death, and a constant beep. Shifting out of «D» causes both the beep and the red triangle of death to disappear. Very weird. This must be a safety feature: if a technician is connected to the OBD port, and puts the car in drive with door open, he must need a special warning! There is actually an internal dummy DTC created in the ABS ECU to support this mode: when the driver’s door is closed, the DTC spontaneously disappears, which should never happen. Unplugging the Tactrix made this condition disappear.

   The HV battery cells all look closely matched in voltage, so I’m hoping that my parents can get a few more years out of it.

2. Nice work. The throttle body cleaning is the recommended fix for P3191/P3101. Of course a dirty MAF sensor does not help. And catching up on deferred maintenance and replacing the 12V battery are all necessary steps.

   Don’t worry about the pool at the bottom of the intake manifold. One reason that is there is because of the PCV system where some oil gets into the PCV hoses. Further, some unburnt fuel will come up from the intake manifold as part of the Atkinson cycle process (where the compression cycle will start while the intake valves remain partially open) and ends up mixing with the oil.

3. I would add that over-filled oil also leads to higher amounts found in the intake manifold.

   Bob Wilson

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   Joined:

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   Thanks for the info on the oil in the intake manifold. The car has had the engine oil changed regularly, but not much else. I’m planning on changing the transaxle fluid (Toyota OEM) and the interior and engine filters. The coolant is original, rated for 120K miles, but it has been 13 years. The brake pads and disks look great. Anything else I should consider?

5. The engine and inverter coolant should be replaced after 13 years, for sure.

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   Everything you described sounds like same things I’ve experienced and came back from- except currently. I never tried the starter fluid. Are you talking about spraying that down in the throttle body?

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   Yes, this stuff has been around forever. It’s basically ether. I just sprayed a short burst down into the throttle body before starting the engine.

   I don’t think this was necessary, but I was very concerned about the traction battery SOC, and how many more cranking attempts were left.

   This can help to show whether there is a fuel delivery problem, but will only keep the engine running for a few seconds. You don’t want to spray too much of it, as it strips the oil off the cylinder walls if used to keep an engine running.

   Have you checked the MAF sensor? I think this was the root cause of my problem.

8. 
   

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   2001 Prius

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   I

   Hi,I’m from Poland
   I have this same problem. Engine working 8 sec or one minute and stop.
   I replaced gasket head, sparks, coils, fuel pump, ecu hv and engine.
   please help !

   Attached Files:

9. 
   

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   2002 Prius

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   —-USA—-

   I’m having same issues any luck

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

Возникла проблема на холостых маленькие обороты при трогании с места двигатель глохнет. Сканер показал: Р 3101. Доп . информация. 2.205. и. 3.204. Что может быть? Расход масла нет.

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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asamutin » 15 янв 2018, 08:51

Пробег какой? Компрессию мерили? Сканер показывает
P3101-204 Сигнал ошибки с ECU двигателя (ненормальная подача мощности)
P3101-205 Сигнал ошибки с ECU двигателя (невозможно запустить двигатель)
ДВС давно обслуживали?( чистка дроссельной заслонки, промывка форсунок и т д)

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Edikzen » 15 янв 2018, 18:06

Сканер показал только код , подкод не выдал я скидывал клемму диагност меня уже отчитал за это. Заслонки не чистил, форсунки промывал проехал около 50000 тысяч.км.

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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asamutin » 15 янв 2018, 19:48

Вот вам и наипервейшая причина! На данном автомобиле по техрегламенту положено каждые 30000 чистить дроссель, мыть форсы, не говоря уже о том, что менять масло каждые 7500 км! Обслужите ДВС в первую очередь! Масложор большой?

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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mixser » 15 янв 2018, 20:09

Asamutin, подскажи форсы со снятием моешь?

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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asamutin » 15 янв 2018, 20:23

Если до этого ни разу не мыл, то лучше со снятием в ультразвуковой ванне

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Edikzen » 15 янв 2018, 20:55

Масло меняю через каждые 7.5 тыс.км., расход масла нет.

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Walhalla » 16 янв 2018, 00:09

Toyota Estima Hybrid 2001

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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asamutin » 16 янв 2018, 08:35

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Walhalla » 16 янв 2018, 14:29

Toyota Estima Hybrid 2001

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Edikzen » 16 янв 2018, 17:37

Сегодня загнал в сервис чистить дроссель ,фотку позже выложу. Сканер выдал другую ошибку Р 3190 и Р3191. Будем ждать результат.

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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asamutin » 16 янв 2018, 19:24

Вот скрины с диска и информация для размышления. А лучше всего свяжись с Егором и закажи у него диск.

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Edikzen » 17 янв 2018, 09:11

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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asamutin » 17 янв 2018, 09:50

Скорее всего!

Re: Всё по ошибкам Тойоты Эстимы Гибрид.

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Edikzen » 17 янв 2018, 21:56

Наконец-то, машинку будто подменили, красота. Чуть нажал и она летит. Вся причина в дросселе. Всем удачи.