Fault Codes/General/P1-18GeneralP1-18ErrorGeneralWhat This Code MeansAuxiliary lamp lights; Engine shuts down immediatelyPossible Causes•Activation by customer-supplied sensing devices connected to auxiliary immediate shutdown portsSuggested Actions1Set generator master switch to AUTO position to resetRelated General Fault CodesP1-17P1-15P1-14P1-13NOT IN AUTO MODELOW OIL PRESSUREL7L6L5EARTH LEAKAGEEARTH FAULTUNDERSPEEDBrowse all General fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P1-18 on your specific General unit — cited to the OEM manual, not a forum guess.Your question about P1-18GET THE ANSWERFree account required — we'll bring your question with you.