Question about 2001 Dodge Ram 2500 Truck

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I have a p1693 code on my 2001 ram 2500 diesel how can i fix this ? I am getting crappy mpg's

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  • Master
  • 376 Answers

This code means there was a difference in information between the modules of the system, here is a thread that might beter help you out. I am a member of this site, and its verry helpful to read others solutions.
http://www.dieseltruckresource.com/dev/showthread.php?s=&threadid=27928&highlight=1693

Posted on Jan 03, 2011

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  • Dodge Master
  • 22,156 Answers

Sorry but GM and generic codes do not show this code ,ask code reader manufacturer

Posted on Jan 03, 2011

  • waterprotech Jan 03, 2011

    it states DTC detected in companion mode

  • Colin Stickland
    Colin Stickland Jan 03, 2011

    to be totally honest i havent a clue here ,yes i have done diesels all my life and here in spain most vehicles are diesel ,Now on an old pump type vehicle i would say the timing was retarded but these common rail computer controlled type are completely different the faults i know and how to repair are obsolete as its all electronic controlled on a vehicle this age and newer ,could be a fault with the fly by wire throttle control mechanism ,if i could see it rev up and look at the smoke i might have a idea ,i cannot even hold my finger on the injector pipe here to feel the resonance when the injector fires ,only clue i can give you though is the lead injector ,?? no common rail doesnt use this this was the inbetween type model with conventional type pump buit with advanced added electronics ,The only other thing that is still relevant is the automatic advance but this is again electronicaly controlled and as none of our europeon vehicles can be read on the OBDII as encrypted software is used to make jobs dealer only i cannot be of anymore help just consigned to the the old fogies fossil heap ,best of british with it anyway

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