Low Fuel Level Warning: About 20% Fuel Remaining
The GENERAC-2680 (Generac Evolution) diesel fault code means: Low Fuel Level Warning: About 20% Fuel Remaining. This is a minor severity code.
- Keep running?
- Yes, but fix soon
- DIY difficulty
- moderate
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What Are the Symptoms of GENERAC-2680?
- A Low Fuel Level warning on the controller
- The generator keeps running: it is a warning, not a shutdown
What Causes GENERAC-2680? (Most Likely First)
- Fuel at or below about 20%: Generac's low fuel switch triggered for one minute Very Likely
Can I Keep Running It with GENERAC-2680?
Yes, but fix soon. GENERAC-2680 is rated minor severity. It is not an immediate shutdown fault, but it will not clear itself — book the repair rather than ignoring it.
Frequently Asked Questions
What does Generac code 2680 mean?
Low Fuel Level: a warning Generac's Power Zone 410 manual says triggers when the low fuel switch is active for one minute, at 20% fuel remaining.
Is 2680 low LP pressure?
No. Generac's low fuel pressure warning is 2690; 2680 is the fuel level in the tank.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose GENERAC-2680?
Refuel the generator's tank.
If the tank is full and the warning stays, have the low fuel switch checked.
Do not confuse it with 2690 (Low Fuel Pressure) or 2681 (Extremely Low Fuel Level, below 10%, an alarm).
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
Which Vehicles Commonly Get GENERAC-2680?
- Generac standby generators with a Power Zone 410 controller (the code table this page is checked against)
- Generac lists the same code family on its air-cooled home standby support pages
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