FUEL LEVEL SENSOR, LOW RANGE
Fuel level sensor indicates a low fuel condition.
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What it means (plain English)
The fuel level sensor measures how much fuel is in the tank. If it reads too low, the engine thinks you might run out of fuel.
What the computer is actually seeing
The engine control module (ECM) sees a voltage signal from the fuel level sensor typically between 0.5V (empty) and 4.5V (full). A reading below 0.6V triggers the code.
What a healthy reading looks like
Expected voltage signal from the fuel level sensor should be between 0.6V (minimum fuel level) and 4.5V (full tank).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check fuel level in the tank. Is fuel low? Yes: Add fuel and see if code clears. No: Proceed to next step.
- 22. Inspect the wiring and connector to the fuel level sensor. Are there any visible damages or corrosion? Yes: Repair or replace damaged components. No: Proceed to next step.
- 33. Use a multimeter to check the voltage at the fuel level sensor connector with the ignition on. Is voltage below 0.6V? Yes: Replace the fuel level sensor. No: Proceed to next step.
- 44. Check the fuel level sensor calibration in the ECM. Is the calibration correct? No: Recalibrate the ECM if possible; if calibration is not adjustable, consider replacing the ECM.
Common causes
- Faulty fuel level sensor
- Damaged wiring or connectors to the fuel level sensor
- Low fuel level in the tank
- ECM calibration issue
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You can drive, but you'll want to fill up the tank to avoid running out of fuel.
Will this code come back after resetting?
If the root cause isn't resolved, the code will likely return.
Why does this code show up with other codes?
It often pairs with other fuel system faults, as low fuel reading can affect engine performance.
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