manson3123 Posted February 28, 2023 Report Share Posted February 28, 2023 Today my 2017 journey sxt with 89,000k miles went into limp mode with a red lightning bolt symbol on the dash. I have codes U0401-00 and C121C-00. I was able to drive the car home but there is just about no throttle response. All considered, it ran smooth. I can't seem to find anything on these codes that make sense to me. Was wondering it anyone has came across this in the past that can share some insight. Quote Link to comment Share on other sites More sharing options...
mikecast Posted April 24, 2023 Report Share Posted April 24, 2023 it's ur electronic throttle body.. it either dirty or need to be replaced. Quote Link to comment Share on other sites More sharing options...
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