Fuel Level Sensor Circuit Low
The fuel level sensor is reporting a low voltage reading.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The sensor that tells the computer how much fuel is in the tank is sending a low signal, meaning the computer thinks there's little to no fuel, even if there’s plenty in the tank.
What the computer is actually seeing
The engine control module (ECM) expects a voltage signal from the fuel level sensor between 0.5 to 4.5 volts, which corresponds to fuel levels from empty to full. A reading under 0.5 volts indicates low fuel level.
What a healthy reading looks like
When operating normally, expect fuel level sensor output to be between 0.5V (empty) and 4.5V (full).
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.
- 1Check fuel level in the tank; add fuel if low.
- 2Inspect wiring and connectors for damage or corrosion—repair as needed.
- 3Using a multimeter, test voltage at the fuel level sensor connector. It should be between 0.5V and 4.5V. If it’s below 0.5V, check the wiring back to the ECM.
- 4If voltage is correct, replace the fuel level sensor.
Common causes
- Faulty fuel level sensor
- Damaged wiring or connectors
- Corroded terminals at the sensor
- Low fuel level or incorrect fuel type
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable, but pay attention to your fuel level since the gauge may not be accurate.
Will this code come back after clearing it?
Yes, if the underlying issue isn't fixed, the code will likely return.
Why does this code sometimes pair with low fuel pressure codes?
A failing fuel level sensor can cause inaccurate readings that might mislead the computer into thinking there's an issue with fuel delivery.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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