Fault Codes/Generac/505Generac505UnclassifiedGeneralWhat This Code MeansConfiguration MismatchPossible Causes•Voltage configuration set in controller does not match voltage configuration for installed Voltage Configuration Cartridge (VCC).Related Generac Fault Codes505-J450650410005031005502100650110485001053Browse all Generac fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 505 on your specific Generac unit — cited to the OEM manual, not a forum guess.Your question about 505GET THE ANSWERFree account required — we'll bring your question with you.