Fault Codes/Cummins/205Cummins205UnclassifiedGeneralWhat This Code Means205Possible Causes•Optional customer selectionRelated Cummins Fault Codes212213195214154216153218150219147220Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 205 on your specific Cummins unit — cited to the OEM manual, not a forum guess.Your question about 205GET THE ANSWERFree account required — we'll bring your question with you.