Fault Codes/Cummins/285Cummins285UnclassifiedGeneralWhat This Code MeansEngine shutdown; PCC control not responding to the engine control modulePossible Causes•Datalink failure•The engine controller has sensed a fault condition and is broadcasting the fault messageSuggested Actions1Consult the engine service manualRelated Cummins Fault Codes286379254418252425245426239689238911Browse all Cummins fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 285 on your specific Cummins unit — cited to the OEM manual, not a forum guess.Your question about 285GET THE ANSWERFree account required — we'll bring your question with you.