P0128 code

Discussion in 'Dodge Challenger General Discussions' started by Janning, Jan 9, 2021.

  1. 2017 Redline HC

    2017 Redline HC 2021 Durango RT

    Posts:
    1,105
    Likes Received:
    319
    Joined:
    Apr 18, 2019
    Location:
    Southern Ontario
    The screen shots I took were from my 2017 manual.
     
  2. Janning

    Janning Full Access Member

    Posts:
    60
    Likes Received:
    1
    Joined:
    Feb 21, 2015
    I'm stil not finding this Page 7685 has the code trouble shooting procedures, but the pics looks like this is all of it ? The stat is an easy change, but this sensor does not look fun at all.
     
  3. 2017 Redline HC

    2017 Redline HC 2021 Durango RT

    Posts:
    1,105
    Likes Received:
    319
    Joined:
    Apr 18, 2019
    Location:
    Southern Ontario
  4. Janning

    Janning Full Access Member

    Posts:
    60
    Likes Received:
    1
    Joined:
    Feb 21, 2015
    Thank you ..got it. So the gist of it all is, I have a new in the box OEM T stat,,,,,,,change it and stop laying games with the $#%#$ 180, I can do that in 20 minutes. Clear code and drive.
    Being it iS at 180+ when the light for P0128 comes on, it could be the sensor....Which is cheap enough but I'm thinking that change is beyond what I can do. (I'm sure i could do it, take 8 hours and after that much faster / better) but I dont have the time.
     
  5. Mfknjadagr8

    Mfknjadagr8 Full Access Member

    Age:
    40
    Posts:
    50
    Likes Received:
    14
    Joined:
    Aug 2, 2020
    Location:
    US
    I was under the impression you needed to tune the pcm to the lower tstat temp so the fans come on earlier and to not get error codes. If the pcm is expecting you to reach 190 or 205 w/e stock warm temperature is and your tstat opens at 180 it may not get to temp in time as the tstat prevent the sensor from getting to 190 or 205 in time...just a thought.

    Sent from my SM-N975U using Tapatalk
     
  6. mikeT

    mikeT Full Access Member

    Posts:
    129
    Likes Received:
    35
    Joined:
    Dec 5, 2020
    Location:
    AZ
    (5149077AB)