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trailer lights made glowplug light come on

Discussion in 'Mk5 VW Jetta, Sportwagen, and Audi A3 TDI' started by Anna Müll, Apr 12, 2012.

  1. Anna Müll

    Anna Müll New Member

    Joined:
    Apr 12, 2012
    Messages:
    2
    Car:
    2009 JSW TDI
    I bought the recommended wiring harness from etrailer for a 2009 JSW TDI and after looking at the installation instructions, took it to U-HAUL for the install. All the lights worked fine during testing.

    When I drove away, the glowplug light and subsequentially the check-engine light came on.

    The OBD-ii diagnostic code points to some sort of turbo filter do-hicky which (according to the mechanic) seems to be functioning properly.

    The JSW goes into "limp mode" moments after the glowplug light comes on (and starts flashing)

    How can the installation of trailer lights cause an engine malfunction?
    Last edited by a moderator: Apr 12, 2012
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  2. Keithuk

    Keithuk Super Moderator

    Joined:
    Aug 29, 2010
    Messages:
    5,131
    Car:
    2010 Golf GTD (170) CBBB
    Location:
    Stoke on Trent, England
    Welcome to the forum. welcometomyturbodies

    What error codes does this scanner show you?

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