Fault Codes/Discovery Energy, LLC (Rehlko)/D09Discovery Energy, LLC (Rehlko)D09UnclassifiedLubricationWhat This Code MeansLow fuel pressure shutdownRelated Discovery Energy, LLC (Rehlko) Fault CodesP26 - 65P27 - 1161127 7P27 - 117P0129P0522P0523P0524P2261P2262P2263P2300Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for D09 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about D09GET THE ANSWERFree account required — we'll bring your question with you.