Fault Codes/Multiquip/CANBUS COMM ERRORMultiquipCANBUS COMM ERRORUnclassifiedGeneralWhat This Code MeansEngine shutdownPossible Causes•CANBUS communication error with the controller•CANBUS communication error with the ECU845 controllerSuggested Actions1Replace the ECU845 controllerRelated Multiquip Fault CodesDEF LOW!DERATE CONDITION EXISTSABSENCE OF REAGENT DOSINGE-STOP SD ACTIVE8291EATS ERROR8135F08133F68131F8Browse all Multiquip fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for CANBUS COMM ERROR on your specific Multiquip unit — cited to the OEM manual, not a forum guess.TRY IT FREE