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"Service 4 wheel drive system along with service electronic throttle control" message

Discussion in 'Grand Cherokee' started by 14 GCSummit, Feb 23, 2022.

  1. Feb 23, 2022 at 5:56 PM
    #1
    14 GCSummit

    #1
    14 GCSummit [OP] New Member

    Joined:
    Feb 23, 2022
    Member:
    #6288
    Messages:
    2
    Gender:
    Male
    First Name:
    Dan
    Vehicle:
    14 GCSummit 5.7
    None
    Having some issues with my recently purchased Grand Cherokee, autozone printed out my codes for me which are
    P0300 multiple cylinder misfire

    U0401-00 implausible data from ecm/pcm

    U0403-00 implausible data from transfer case

    when it throws the fault it kills my cruise control, revs my radiator fan sky high, I lose my temp gauge, and I get “ service 4 wheel drive system along with service electronic throttle control “

    many light you guys can shed on the situation is greatly appreciated, thanks , Dan
     
    14 GCSummit, Feb 23, 2022
    #1
  2. Feb 26, 2022 at 8:37 PM
    #2
    Bob

    #2
    Bob Well-Known Member Moderator

    Joined:
    Jul 18, 2016
    Member:
    #1
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    Any update on this?
     
    Bob, Feb 26, 2022
    #2
  3. Feb 27, 2022 at 6:12 AM
    #3
    14 GCSummit

    #3
    14 GCSummit [OP] New Member

    Joined:
    Feb 23, 2022
    Member:
    #6288
    Messages:
    2
    Gender:
    Male
    First Name:
    Dan
    Vehicle:
    14 GCSummit 5.7
    None
    The mechanic at my job has a nice scanner, Monday after work I’m going to let him scan it and see if we can nail it down. Other than that without letting a dealer rape me while they replace unnecessary items I’m not 100% what to attack.
     
    14 GCSummit, Feb 27, 2022
    #3
  4. Feb 28, 2022 at 3:02 PM
    #4
    hafaday

    #4
    hafaday Member

    Joined:
    Feb 18, 2022
    Member:
    #6274
    Messages:
    23
    Gender:
    Male
    First Name:
    Bill
    Virginia
    Vehicle:
    14 JKU
    Few things
    Battery voltage? Lose batt. terminal? TIPM slowly taking a dump?
     
    hafaday, Feb 28, 2022
    #4
    aggrex likes this.
  5. May 28, 2023 at 3:53 AM
    #5
    Fishman106

    #5
    Fishman106 New Member

    Joined:
    May 19, 2023
    Member:
    #7801
    Messages:
    1
    Gender:
    Male
    Hi did you ever get a fix for this? I have exactly the same problem and can’t figure out if it’s a faulty sensor or if it is actually something wrong. Any help would be awesome
     
    Fishman106, May 28, 2023
    #5
  6. Jul 11, 2024 at 8:12 PM
    #6
    dingohoo

    #6
    dingohoo New Member

    Joined:
    Jul 11, 2024
    Member:
    #8779
    Messages:
    2
    Gender:
    Male
    First Name:
    Dmitri
    Vehicle:
    Grand Cherokee wk2 2014
    Gents, has anybody got a resolution? I have exactly the same problem on wk2 2014
     
    dingohoo, Jul 11, 2024
    #6
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