1517
UnclassifiedCooling
What This Code Means
High Temperature (Coolant temp greater than 246 ºF (119 ºC) for 1 second); High Temperature; Running Lean; Cranking with Low Fuel Pressure faults to rpm sensor loss; Running with low fuel pressure faults to rpm sensor loss; High temperature (Coolant temp greater than 246 ºF (119 ºC) for 1 second); High temperature; Cranking with low fuel pressure; Running with low fuel pressure
Possible Causes
- •Air Flow Impeded / Flow Issue
- •Very low fuel pressure while running
- •Low fuel pressure for 1200 ms preceding high temperature alarm
- •Low fuel pressure for at least 1200 ms
- •Ignition fault
- •Air pocket in fuel line
- •Dirty fuel
- •Low fuel pressure for 1200 ms
- •Air flow impeded / Flow issue
- •Very low fuel pressure while running (low for 1200 ms preceding high temperature alarm)
Suggested Actions
- 1Check the inlet/outlet for debris.
- 2Check coolant sensor circuit for proper operation.
- 3Fuel pressure must be measured as low for 1200 ms preceding high temperature alarm to set this E-Code.
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 1517 on your specific Generac unit — cited to the OEM manual, not a forum guess.
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