Generac Code 1600: Underspeed alarm
Code 1600 is listed as 'Underspeed alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Error Codes
Browse published fault-code records by brand, product and displayed code.
Each record starts with the source meaning, then separates applicability, owner-safe actions, operating uncertainty and qualified-service boundaries. A matching code string alone is not enough: confirm the brand, product, model and controller before acting.
Generac Code 1601: Underspeed alarm
Code 1601 is listed as 'Underspeed alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1602: Underspeed alarm
Code 1602 is listed as 'Underspeed alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1603: Underspeed alarm
Code 1603 is listed as 'Underspeed alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1800: Overvoltage alarm
Code 1800 is listed as 'Overvoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1801: Overvoltage alarm
Code 1801 is listed as 'Overvoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1802: Overvoltage alarm
Code 1802 is listed as 'Overvoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1803: Overvoltage alarm
Code 1803 is listed as 'Overvoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1901: Undervoltage alarm
Code 1901 is listed as 'Undervoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1902: Undervoltage alarm
Code 1902 is listed as 'Undervoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1903: Undervoltage alarm
Code 1903 is listed as 'Undervoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1904: Undervoltage alarm
Code 1904 is listed as 'Undervoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1905: Undervoltage alarm
Code 1905 is listed as 'Undervoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 1906: Undervoltage alarm
Code 1906 is listed as 'Undervoltage alarm.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 4415: Engine knock sensor fault
Code 4415 is listed as 'Engine knock sensor fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 4417: Engine knock sensor fault
Code 4417 is listed as 'Engine knock sensor fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 4915: Fuel mixer fault
Code 4915 is listed as 'Fuel mixer fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 4917: Fuel mixer fault
Code 4917 is listed as 'Fuel mixer fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 5003: Charge-air cooler fault
Code 5003 is listed as 'Charge-air cooler fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 5004: Charge-air cooler fault
Code 5004 is listed as 'Charge-air cooler fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 5101: RPM low fault
Code 5101 is listed as 'RPM low fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 5107: RPM fault
Code 5107 is listed as 'RPM fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 5115: RPM high fault
Code 5115 is listed as 'RPM high fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01Generac Code 5117: RPM low fault
Code 5117 is listed as 'RPM low fault.' for Generac Air/Liquid-Cooled Home Standby Generator. Verify the exact model and controller before acting.
Source checked 2026-05-01