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  1. A

    cat 299 d3 voltage issues

    so we have 299 d3 1960 hrs message says system low voltage check battery and alternator ,we replaced both still the same code then it beeps eventually the battery is discharged
  2. A

    299 d3 catalyst reagent fault 3516-16

    having this error code on a 2021 299 d3 catalyst reagent concentration high-moderate severity 2 any ideas goes in limp mode after 10 mns
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