Fault Codes/Cummins/154Cummins154UnclassifiedGeneralWhat This Code MeansIntake manifold temperature sensor out of range low warningPossible Causes•Intake manifold temperature sensor out of range (OOR), low•The engine controller has sensed a fault condition and is broadcasting the fault messageSuggested Actions1Consult the engine service manualRelated Cummins Fault Codes195205153212150213147214141216135218Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 154 on your specific Cummins unit — cited to the OEM manual, not a forum guess.Your question about 154GET THE ANSWERFree account required — we'll bring your question with you.