2008 Red triangle

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

Tags:
  1. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

    Joined:
    Sep 25, 2021
    20
    5
    0
    Location:
    Knoxville, Tn
    Vehicle:
    2008 Prius
    Model:
    Two
    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

    Joined:
    Mar 30, 2008
    28,203
    18,657
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    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

    Joined:
    Sep 25, 2021
    20
    5
    0
    Location:
    Knoxville, Tn
    Vehicle:
    2008 Prius
    Model:
    Two
    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

    Joined:
    Mar 30, 2008
    28,203
    18,657
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    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
    PriusCamper likes this.
  5. JON KIRKEGAARD

    JON KIRKEGAARD Junior Member

    Joined:
    Sep 25, 2021
    20
    5
    0
    Location:
    Knoxville, Tn
    Vehicle:
    2008 Prius
    Model:
    Two
    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

    Joined:
    Mar 3, 2012
    13,159
    5,322
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    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

    Joined:
    Jan 31, 2021
    2,472
    990
    0
    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    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

    Joined:
    Mar 3, 2012
    13,159
    5,322
    0
    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    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

    Joined:
    Jan 31, 2021
    2,472
    990
    0
    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    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

    Joined:
    Sep 25, 2021
    20
    5
    0
    Location:
    Knoxville, Tn
    Vehicle:
    2008 Prius
    Model:
    Two
    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

    Joined:
    Mar 30, 2008
    28,203
    18,657
    0
    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    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

    Joined:
    Sep 25, 2021
    20
    5
    0
    Location:
    Knoxville, Tn
    Vehicle:
    2008 Prius
    Model:
    Two
    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
(You must log in or sign up to post here.)