Fault Codes/Cummins/425Cummins425UnclassifiedGeneralWhat This Code MeansShutdown; Oil temperature out of range indicationPossible Causes•Oil temperature sensor output is out of range (OOR), high or lowRelated Cummins Fault Codes426689418911379912286913285914254915Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 425 on your specific Cummins unit — cited to the OEM manual, not a forum guess.Your question about 425GET THE ANSWERFree account required — we'll bring your question with you.