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Hey guys so have a 2015 Chrysler 200 S 3.6L AWD and getting codes U0121 and U0001. Dash also says to service the AWD and service AWD light is on as well. I’ve seen a few people say transfer case but that was before I had codes which seem to point towards the ABS control module. So was wondering if anyone has had a similar experience and potential fixes?
 

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2016 Chrysler 200 S, 1998 Sebring JX
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U0121 is a DTCM (drivetrain control module) loss of communication with the ABS module. I do not see a U0001 fault for this module.
The diagnostic procedure requires a scan tool to verify correct module configuration and CAN data bus communication integrity on the network. Search other modules (especially the ABS) for stored fault codes.
It is likely electrical. Hard drivetrain codes might begin with a letter 'C' (for chassis).
 
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