2006 Prius Evaporator Core Freezing?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by daveyedgar, Feb 23, 2026 at 6:09 PM.

  1. daveyedgar

    daveyedgar Junior Member

    Joined:
    Feb 14, 2019
    18
    4
    0
    Location:
    Tampa
    Vehicle:
    2008 Prius
    Model:
    Two
    I suspect that my evap core is freezing. When I have the ac in manual mode, high fan, low temp, and set to center vents for long period of time say a couple hours, eventually the flow through the center vents becomes restricted. The air flow through the center vents is week even though the fan is still on hi and the air becomes slightly warmer than when it started. When starting the car after it has been off sitting for a few hours the air comes on cold full blast as it should be. I've checked the air filter, its fairly new and clean. I've use the foam cleaner you spray into the drain tube and it came out fairly clean. The drain isn't clogged. I hooked up my gauge set and these are the readings I got when the ac was working. I didn't have time to wait for the symptoms to occur. Any ideas?

    Unfortunately I wasn't able to get techstream to work so I don't have those readings. I included screen shots.

    car is off.
    [​IMG]

    The next 4 are readings taken over a 30 minute period with the temp on low, fan high, ac on. first on fresh air then on circulate.
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    this final image is when the car was shut off
    [​IMG]
     
  2. Brian1954

    Brian1954 Senior Member

    Joined:
    Jan 31, 2021
    2,367
    952
    0
    Location:
    South Central PA, USA
    Vehicle:
    2011 Prius
    Model:
    III
    This is a continuation of the thread that the OP created on Dec 5, 2025.
    https://priuschat.com/index.php?posts/3583802

    To the OP: In the future, please do not create a new thread for a problem with the car when you already have an older thread discussing the same problem. It makes it very hard to follow the full discussion.
     
    #2 Brian1954, Feb 23, 2026 at 7:46 PM
    Last edited: Feb 23, 2026 at 7:53 PM
    PriusCamper likes this.