Fault Codes/Rehlko/CAN COMM FAULT ARRehlkoCAN COMM FAULT ARUnclassifiedGeneralWhat This Code MeansErreur de communication CAN du moteurPossible Causes•Problème de câblage de l’ECM•Problème d’alimentation électrique de l’ECMSuggested Actions1Contrôler le câblage de l’ECM2Contrôler l’alimentation électrique de l’ECMRelated Rehlko Fault CodesCAN COMM FAULT SDCHECK EXER NOT SCHBATTERYCHARGERFAULTCHKNGMETERBATTERYCHARGER FAULTCMBATTERY VOLTAGE LOW AVCOMMON FAULT SHUTDWNBATTERY VOLTAGE HIGH AVCOMMON WARNGBATT CHG FLT AVCONCHECKINGBrowse all Rehlko fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for CAN COMM FAULT AR on your specific Rehlko unit — cited to the OEM manual, not a forum guess.Your question about CAN COMM FAULT ARGET THE ANSWERFree account required — we'll bring your question with you.