Fuel Level Sensor Circuit High
The fuel level sensor is reporting a high voltage signal.
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What it means (plain English)
The fuel level sensor in the tank is sending a signal that indicates the fuel level is higher than it actually is, which can cause fuel gauge issues.
What the computer is actually seeing
The engine control module (ECM) reads the fuel level sensor signal and expects to see a voltage in the range of 0.5V (empty) to 4.5V (full). A voltage above 4.5V indicates a fault.
What a healthy reading looks like
0.5V (empty) to 4.5V (full); anything above 4.5V triggers this fault.
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 sensor wiring for shorts or damage. Disconnect the sensor and measure the resistance across its terminals.
Common causes
- Short circuit in the fuel level sensor wiring
- Defective fuel level sensor
- Faulty ECM or sensor calibration issues
Typical repair cost
$$
Related codes
Frequently asked questions
Can I still drive the vehicle?
Yes, the vehicle is still drivable but monitor fuel levels as the gauge may not be accurate.
Will the code come back after clearing it?
It can if the underlying issue isn't fixed, like a bad sensor or wiring.
Why does this code appear with other codes?
It's common for fuel system issues to trigger multiple codes, especially if a short or sensor failure affects several systems.
Working a real vehicle right now?
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