Question about 1998 Plymouth Voyager

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My inspection failed for P1698 emmission....what is that code for??????

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"your code is a communication loss code between the TCM and the other module(s). It's not uncommon for the wiring problems to develop in the harness that runs from the PCM in frt of the battery to the TCM on the Pass side inner fender. Look around where the harness is tie strapped to the trans pan. it's commonfor the wires to break or be fullof water especially after somebody has had the pan off or the tranny has been removed for repair. Can also be a wiring problem right at the PCM or TCM connector or the TCM itself
although not as likely as a wiring issue.
when communication is lost the transmission will go into limp mode which is 2nd gear and stay there. Sometimes it will come back every time the van is shut off. Not an easy fix but on the plus side not an overly expensive one if you're gonna tackle it yourself. You'll need a scanner that will give you input and output speed sensor readings and a wiring diagram. TCM's should be reasonably cheap used or even new, not sure haven't priced one in forever and the wrecking yard are full of them and even the connector(s) should they be required"



I saw this post on another website. Hope it works for you

Posted on Sep 23, 2009

  • j_schopp Sep 23, 2009

    "your code is a communication loss code between the TCM and the other module(s). It's not uncommon for the wiring problems to develop in the harness that runs from the PCM in frt of the battery to the TCM on the Pass side inner fender. Look around where the harness is tie strapped to the trans pan. it's commonfor the wires to break or be fullof water especially after somebody has had the pan off or the tranny has been removed for repair. Can also be a wiring problem right at the PCM or TCM connector or the TCM itself
    although not as likely as a wiring issue.
    when communication is lost the transmission will go into limp mode which is 2nd gear and stay there. Sometimes it will come back every time the van is shut off. Not an easy fix but on the plus side not an overly expensive one if you're gonna tackle it yourself. You'll need a scanner that will give you input and output speed sensor readings and a wiring diagram. TCM's should be reasonably cheap used or even new, not sure haven't priced one in forever and the wrecking yard are full of them and even the connector(s) should they be required"







    I saw this post on another website. Hope it works for you

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