2008 Red triangle

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by JON KIRKEGAARD, Apr 25, 2026 at 10:16 AM.

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  1. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

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    The Air Coniditoner is not working, hooked up the 134 gauges static pressure of 80 psi. I pulled the 20 Amp HEV fuse the engine started the fans came on, the AC compressor did not engauge, jumped the AC pressure switch the fans came on, no compressor reinstalled the HEV fuse. Got the red Triangle cleared the codes., hoping for a code reset but no. Now it will not start only goes from park to netural, will not set codes.

    Did i kill my HV invertor?

    I replaced the HV battery (new from Toytoa) 10 months ago. I have invertor coolant flow, the 3 way coolant switch connector is clean, HV connections are clean.

    Going to get the 12V battery tested scanner shows 11.6V.

    Help!!!
     
    #1 JON KIRKEGAARD, Apr 25, 2026 at 10:16 AM
  2. ChapmanF

    ChapmanF Senior Member

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    Does anything light on the dash now? The triangle perhaps?
     
    #2 ChapmanF, Apr 25, 2026 at 12:10 PM
  3. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

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    The lights that are on are traction control, circle with ! in it, ABS, VSC, check engine, and tire sensor. The tire sensor is always on. The gas gauge is flashing on empty, but the car has 3/4 of a tank of gas, and of couse the red triangle. The scanner that I'm using is a CGSULIT SC880.
     
    #3 JON KIRKEGAARD, Apr 25, 2026 at 1:04 PM
  4. ChapmanF

    ChapmanF Senior Member

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    I'm not familiar with that particular scan tool, but scan tools that can't show you all the codes your Prius has are quite common.

    Because the triangle is on, it would be very helpful to find out the associated code(s), which will require getting access to another scan tool.

    The codes behind the brake/skid/abs lights can be retrieved without a scan tool, this way:

    Blink (a/k/a Flash) Codes – How to. | PriusChat

    You'll probably have at least 58 on the ((!)) light and/or 51 on the VSC light, both of which only tell you there are hybrid codes you need to retrieve, though you kind of already know that.

    From your symptoms, I wouldn't be surprised if P0AA6 with inf code 611 or 614 is among your hybrid-system codes, but it would be good to confirm that with a scan tool.
     
    #4 ChapmanF, Apr 25, 2026 at 1:16 PM
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  5. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

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    What third party scanner works best with a Gen 2?
     
    #5 JON KIRKEGAARD, Apr 25, 2026 at 1:39 PM
  6. PriusCamper

    PriusCamper Senior Member

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    I like this one: Panlong OBD2 Scanner Bluetooth OBDII Diagnostic Tool Car Code Reader Turn Off... | eBay
    I use it for Dr. Prius app and Car Scanner app...

    Alternatively, you could consider a more expensive Autel device, which will give you almost all the features you get when you buy a Mini-VCI plug with cracked version of Toyota Techstream that you run on an old Window's laptop.
     
    #6 PriusCamper, Apr 25, 2026 at 3:38 PM
  7. Brian1954

    Brian1954 Senior Member

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    Read this Gen 2 OBD2 App Review thread, https://priuschat.com/index.php?posts/3290690
    I recommend the Autel AP200 because it is capable of communicating with all the ECUs in the car, which means that it can read all the trouble codes. Most scanners can not read all the trouble codes (Dr Prius, Car Scanner, etc). The Autel AP200 is a Bluetooth OBD2 dongle that you use with an Autel app on your phone or tablet. It costs about $60 on Amazon.
     
    #7 Brian1954, Apr 25, 2026 at 3:47 PM
  8. PriusCamper

    PriusCamper Senior Member

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    And for clarification for the readers, I think I read that the Autel AP2500 doesn't do as much for a Prius as Autel AP200? Is that correct? I think @ChapmanF said something about this once?
     
    #8 PriusCamper, Apr 25, 2026 at 3:50 PM
  9. Brian1954

    Brian1954 Senior Member

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    That is correct. The Autel AP200 can do more than the Autel AP2500.
     
    #9 Brian1954, Apr 25, 2026 at 3:53 PM
  10. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

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    The EBC, ABS, AND VSC are on a fast flash cycle, the air bag light is on an alternating fast flash cycle. The traction control and the check engine are on steady. The tire sensor light flashed these codes 21, 22, 23, 24, 25, 27
     
    #10 JON KIRKEGAARD, Apr 25, 2026 at 3:54 PM
  11. ChapmanF

    ChapmanF Senior Member

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    Really! And yet some of those lights are on when you go IG ON normally?
     
    #11 ChapmanF, Apr 25, 2026 at 4:47 PM
  12. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

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    Correct, the only one that wasn't on during normal ING is the air bag.

    I have done 3 HV and 12V battery resets with no change in the master caution light status. It is parked on a small hill if the angle sensor is an issue, but it is the same hill that it is always parked on.

    I checked for A/C codes got a 42.
     
    #12 JON KIRKEGAARD, Apr 25, 2026 at 5:25 PM
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