Ambient Sensor problems

Discussion in 'Navigation, Security Systems, & Electrical' started by FooBird, Oct 6, 2017.

  1. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

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    4,793
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    Si
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    Started having problems with the ambient temperature sensor not working. Sporadically showing a temperature that's completely wrong, sometimes just empty bars (---°F) and today, nothing at all.

    It's sad but it's been nearly 5.5 years and this is the first electrical problem showing up on the car (other than the charging system TSB that under-charged the battery). Ordered a new sensor and will being doing a little disassembly to try to figure it out. I have a feeling that it's got a short or resistor burned up. I'll update when I break everything open in the near future.
     
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  2. webby
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    def keep us posted on what you find
     
  3. Pauly99to17

    Pauly99to17 Well-Known Member

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    9,156
    Location:
    Ville de Quebec
    Vehicle Model:
    2012 LX
    Body Style:
    Dyno Blue Pearl Sedan (FB2)
    I added my own sensor to my car because my 2012 LX did not one) and have the same problem although it always shows an incorrect temperature. I had a look at it and the connection points were badly rusted. I cleaned them as well as I could and noticed a difference afterwards but it wasn't long before the readings were off again. It seems the sensor is permanently damaged. Maybe rust inside. ? I need to order another one. They are not expensive at all. I think about 10$.
     
  4. Nix
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    Nix Jötunn Moderator

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    I think they use thermistors instead of actual thermometers for those sensors.


    I know they are supposedly accurate but i have no idea on durability.
     
  5. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

    Messages:
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    Si
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    It's been pretty good all along but of late started going out. I picked up the replacement yesterday. Might get to take care of it on Saturday.
     
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  6. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

    Messages:
    4,793
    Location:
    Kirkland, WA
    Vehicle Model:
    Si
    Body Style:
    Coupe
    Okay, so I finally got around to getting the front clip off of the car and found my problem. The ambient sensor, clip that holds it on, and the plug that the sensor goes into are all gone. Nothing in there but two blank wires. Uh...

    On my way over to Honda to see what the harness price is and then going to have to call around to some junkers to see if I can't get myself that plug...because I'm going to guess that harness is $$$. Well, anyway, it sits right behind the aluminum crash bumper in front of the radiator, actually really easy to get to.

    20171202_123830.jpg 20171202_125313.jpg
     
  7. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

    Messages:
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    Location:
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    Si
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    Coupe
    FML. Calling around and nobody wants to even talk to me about a 2012 Honda Civic. Unless those have wrecked out, there isn't going to be anything....UGH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    And even if I find one, nobody is going to want to clip a pigtail on that harness to give to me. I've been down this path before with my old Pathfinder. That search took me halfway across the state of California before somebody would give me a pigtail.
     
  8. ron v
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    ron v Fear The Stache

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    I’ll keep an eye out. It’ll give me a reason to hit the junkyard in my town. Plus I need some stuff for my crv.
     
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  9. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

    Messages:
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    Location:
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    Thank God Honda has used the same sensor and connectors since 2003!!

    20171202_161219.jpg
     
  10. bauer311
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    bauer311 Supporting Member

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    civic ex
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    Glad you found what you were looking for foobird. Still strange how all that just disappeared...
     
  11. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

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    Location:
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    Well, time to go out and party with my friends. Tomorrow I will need to figure out which wire goes where.

    I have blue and red wires. The new plug is pink and green. Do you guys have any suggestions??
     
  12. webby
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    Pauly99to17 likes this.
  13. FooBird
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    FooBird If the Foo...well, you know. Just wear it.

    Messages:
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    Location:
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    Vehicle Model:
    Si
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    Coupe
    All done. Ordered a $2 clip to reattach. Otherwise, looks decent enough if you ask me.

    20171203_114452.jpg 20171203_115735.jpg
     
  14. Sarcras
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    Sarcras Supporting Member

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    Noice!
     
  15. bauer311
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    bauer311 Supporting Member

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    Location:
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    Right on!
     

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