can error 121

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07-13-2013, 07:39 PM

interex20002000

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can error 121

I have a 2012 2500 programmed with smarty JR67. It has been running great till I hooked up a edge evolution to use for gauges. Now all I get is a can error 121 and truck will not start. How can I fix? thanks.

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07-15-2013, 12:52 AM

97cummins

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your smarty jr. may be fighting with your edge. Remove both and see if the truck starts.

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07-16-2013, 01:23 PM

interex20002000

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error 121

Brian at smarty bailed me out. He worked on it and got me back up and running great. Smarty has great service!

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