Recent Content by amitt

  1. amitt
    Post

    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    Just for fun, to continue the previous message, this is the image of feedback voltage reading i got with speed #6, the feedback is at 2.8v. This...
    Post by: amitt, Jul 6, 2025 at 4:02 PM in forum: Gen 2 Prius Technical Discussion
  2. amitt
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    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    Correct, 9.4v is not a good feedback for speed #4 , how do i know besides trusting my ear that speed #4 was not on? Well... look at the attched...
    Post by: amitt, Jul 6, 2025 at 3:31 PM in forum: Gen 2 Prius Technical Discussion
  3. amitt
    Post

    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    No codes, i was just actively monitoring temps on dr prius on a hot day. I had suspected this fan for a couple of years now, tried to clean...
    Post by: amitt, Jul 6, 2025 at 1:47 PM in forum: Gen 2 Prius Technical Discussion
  4. amitt
    Post

    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    Correct, i looked and pinout, the PWM and SI go through the same pins. Indeed weird, which makes me think it may be an ECU FW issue, where the...
    Post by: amitt, Jul 6, 2025 at 9:07 AM in forum: Gen 2 Prius Technical Discussion
  5. amitt
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    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    Thanks but i cant open this link, is this for a specific known issue that can solve this ECU contol problem ? Thank you for any tip!
    Post by: amitt, Jul 5, 2025 at 11:51 PM in forum: Gen 2 Prius Technical Discussion
  6. amitt
    Post

    Why Prius ECU can't reduce battery temperature while Dr Prius app can?

    I know it's a very old thread, but the original post has a point about the ECU not being able to control the fan properly, and I'll tell you why:...
    Post by: amitt, Jul 5, 2025 at 10:28 PM in forum: Gen 2 Prius Technical Discussion
  7. amitt
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    3125 inverter issue

    Hi , I just had my inverter temp code on, it was a hot day. I checked the coolant tank, it had no flow, I let it cool for 20 minutes, turned on...
    Post by: amitt, May 5, 2018 in forum: Generation 1 Prius Discussion
  8. amitt
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    help with P0420 , plots inside

    Yes that's what I hope for I believe I can get pass the test, even if I try a few times, the sad thing is that this car never burned a lot of oil,...
    Post by: amitt, May 3, 2018 in forum: Generation 1 Prius Discussion
  9. amitt
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    help with P0420 , plots inside

    Thanks, it will probably not last for long because the engine is worn, it just improved it a bit so I may pass the smog test and renew the...
    Post by: amitt, May 2, 2018 in forum: Generation 1 Prius Discussion
  10. amitt
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    help with P0420 , plots inside

    Hi Erik I have to say it sounded kinda condescending, but I know you were trying to help, so thanks for that. Anyway I used castrol GTX 20W50, and...
    Post by: amitt, May 1, 2018 in forum: Generation 1 Prius Discussion
  11. amitt
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    2002 prius, 228K, P0420

    What kind of oil are you using? Seriously, I have the same problem with the cat con and I will update soon with real data from O2 sensor 2,...
    Post by: amitt, May 1, 2018 in forum: Generation 1 Prius Discussion
  12. amitt
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    help with P0420 , plots inside

    The problem is that even a brand new cat will be filled with oil, and pop this error after a while, it's a known problem, I have to fix the source...
    Post by: amitt, Apr 30, 2018 in forum: Generation 1 Prius Discussion
  13. amitt
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    help with P0420 , plots inside

    Thanks! I drove this morning on the highway, I attached the plots, please look at the section I marked as "highway" this fluctuation is not normal...
    Post by: amitt, Apr 30, 2018 in forum: Generation 1 Prius Discussion
  14. amitt
    Thread

    help with P0420 , plots inside

    I have this p0420 code and check engine light, on a 2002 with 203,000 miles, ( took the HV 2 times out of the car to replace cells, it has...
    Thread by: amitt, Apr 29, 2018, 12 replies, in forum: Generation 1 Prius Discussion