Fuel Tank Level Sensor
The fuel tank level sensor signal is out of range.
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What it means (plain English)
The fuel tank level sensor measures how much fuel is in the tank, and if it reads a value that's too high or low, it triggers a warning.
What the computer is actually seeing
The onboard computer expects voltage levels from the fuel tank level sensor to be within a specific range; anything outside of that range indicates a problem.
What a healthy reading looks like
Voltage should typically 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.
- 11. Start with a visual inspection of the fuel level sensor wiring and connectors for signs of damage or corrosion. Proceed based on findings.
- 22. Connect a multimeter to the fuel tank level sensor harness and compare the voltage reading with expected values while moving the float (if applicable). If voltage is out of range, the sensor may be faulty.
- 33. If the sensor is giving the correct voltage output, check for shorts or open circuits in the wiring harness between the sensor and the ECM.
- 44. Verify the ground connection for the sensor; ensure it's clean and tight. Test with a multimeter for less than 0.5 ohms resistance to ground.
- 55. If wiring and connections are good and the sensor tests within range but the code persists, consider replacing the fuel tank level sensor.
Common causes
- Faulty fuel tank level sensor
- Short circuit in wiring harness
- Open circuit in wiring
- Bad ground connection
- Corrosion at connector
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, it's drivable but fix soon as it can impact fuel usage monitoring.
Will this code come back after clearing it?
If the underlying issue isn't resolved, yes, it likely will.
Why does this code appear with fuel efficiency issues?
An inaccurate fuel level reading can lead to improper fuel management, affecting efficiency.
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