Fuel Level
Indicates the fuel level is below an acceptable threshold.
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 computer thinks your fuel tank is low on fuel, which is defined as lower than about 5% full.
What the computer is actually seeing
The fuel level sensor sends a voltage signal to the computer between 0.5 to 4.5 volts; below 0.5 volts, the computer triggers this code.
What a healthy reading looks like
Fuel level should be between 5% and 100%; voltage from the fuel level sensor should be between 0.5V and 4.5V.
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 the fuel level in the tank; make sure it's above 5%. If it's low, fill it up and see if code returns.
- 22. Inspect the wiring and connectors for the fuel level sensor; look for frays, corrosion, or disconnections. Repair as needed.
- 33. Measure the voltage at the fuel level sensor connector with the key on, engine off; expect between 0.5V and 4.5V. If out of range, sensor may be bad.
- 44. If the voltage is correct, swap the fuel level sensor with a known good one. If code disappears, replace the sensor.
Common causes
- Faulty fuel level sensor
- Damaged wiring or connections to the sensor
- Faulty engine control module (ECM)
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but you should fill the tank as soon as possible to avoid running out of fuel.
Will this code come back after clearing?
It may come back if the underlying issue isn't fixed.
Why does this code sometimes pair with SPN 1541?
SPN 1541 indicates a sensor malfunction, which often happens if the fuel level sensor isn't functioning properly.
Working a real vehicle right now?
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