Fault Codes/Cummins/241Cummins241UnclassifiedCoolingWhat This Code MeansExhaust temperature sensor reading out of rangePossible Causes•Exhaust temperature sensor output is out of range (OOR), high or lowRelated Cummins Fault Codes242243240248235249203343202353196415Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 241 on your specific Cummins unit — cited to the OEM manual, not a forum guess.Your question about 241GET THE ANSWERFree account required — we'll bring your question with you.