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  1. #1
    Junior Member
    Join Date
    Jan 2013
    Posts
    5

    Unhappy X Type 3.0 V6 Fault Codes P1637 & P1643

    Can anyone help, my car has these fault codes P1637 & P1643 and has gone into Limp Mode. I can not afford a Dealer's Diagnostic at the minute so am hoping one of you clever people out there might no something to help.
    Cheers Mick

  2. #2
    Senior Member
    Join Date
    Oct 2011
    Posts
    998
    __________________
    Last edited by alto; 01-06-13 at 09:58.
    05 JAGUAR X TYPE SE SALOON 2.0 DIESEL
    TOUCH SCREEN HEATED SEATS BLUE TOOTH,PHONE, AND RETROFITTED WITH FACELIFT BITS FRONT AND REAR BUMPERS, FRONT GRILLE, BOOT, WING MIRRORS INDICATOR TYPE.

  3. #3
    Senior Member
    Join Date
    Oct 2011
    Posts
    998
    Hope the info below helps you this is not from my knowledge it was sourced from another forum but as i say i hope it helps.The last bit is what the dealer worked out for someone who had the fault code P1643.
    TCM is the TRANSMISSION CONTROL MODULE and the ECM is the ENGINE COMPUTER MODULE.
    Also you dont give any details of your car a lot easier to help if people have details.

    P1637 Can Link ECM/ABSCM Circuit / Network Malfunction.
    P1643 Fuel Pump Monitor Circuit Low Input.The code p1643 isn't a feedback for the fuel pump
    P1643 is a Can network fault between ecm and tcm.. very hard to figure out.. even at a dealer... most times it's the harness failure.. between ecm and tcm. But good luck.
    Turns out the TCM was bad. May have been due to water getting inside of it.. Not quite sure about the whole thing yet. Dealer is still working on it.
    __________________
    05 JAGUAR X TYPE SE SALOON 2.0 DIESEL
    TOUCH SCREEN HEATED SEATS BLUE TOOTH,PHONE, AND RETROFITTED WITH FACELIFT BITS FRONT AND REAR BUMPERS, FRONT GRILLE, BOOT, WING MIRRORS INDICATOR TYPE.


 

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