2017 Grand Cherokee U0403 any ideas.

Wild Bill

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#1
Please fill out the following to ask a question.

MAKE:Jeep
MODEL:Grand Cherokee
YEAR:2017
MILES:28000
ENGINE:3.6
DESCRIBE ISSUE....Stuck in 4wd low, Trac light on, Service 4wd message. Code U0403.

Thanks, Bill
 

nickb2

Wrench. Diagnostic Tech.
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#2
Communication problem with CAN line, probably needs a reprogramming. Go to your dealer, this truck surely is still under warranty.