Fuel Level Input Error
Indicates an issue with the fuel level sensor signal.
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 isn't getting the right reading from the fuel level sensor, which can cause problems if you don't know how much fuel is actually in the tank.
What the computer is actually seeing
The engine control unit (ECU) expects a fuel level sensor voltage signal between 0.5V (empty) and 4.5V (full). When the signal deviates from expectations, it triggers the fault code.
What a healthy reading looks like
Signal should be 0.5V (0% fuel) to 4.5V (100% fuel), with a linear change in voltages as the fuel level changes.
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 wiring and connectors between the fuel level sensor and the ECU for damage or corrosion. Repair or replace as necessary.
- 22. Measure the voltage output from the fuel level sensor with a multimeter while moving the float. It should vary smoothly between 0.5V and 4.5V. If it doesn't, replace the sensor.
- 33. Inspect the fuel tank for any debris or contaminants affecting the sensor's operation. Clean the tank if needed before proceeding.
Common causes
- Faulty fuel level sensor
- Damaged wiring or connectors
- Poor fuel quality or contaminants in the tank
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity, so you can drive, but keep an eye on the fuel gauge.
Will this code come back after I clear it?
If the underlying issue isn't fixed, it'll likely return.
Why does this code often pair with other fuel-related codes?
Because multiple symptoms can stem from similar wiring issues or shared components.
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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