Fault Codes/Cummins/1517Cummins1517UnclassifiedGeneralWhat This Code MeansFailed module shutdown warningPossible Causes•At least one module of a multi-module system has a severe faultRelated Cummins Fault Codes154015411483168914691845146418461449184714481853Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 1517 on your specific Cummins unit — cited to the OEM manual, not a forum guess.Your question about 1517GET THE ANSWERFree account required — we'll bring your question with you.