Fuel Level Sensor Circuit
Indicates an issue with the fuel level sensor in the tank.
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What it means (plain English)
The fuel level sensor is not sending the correct information about how much fuel is in the tank due to a wiring or sensor failure, making your gauge inaccurate.
What the computer is actually seeing
The engine control module (ECM) is receiving a signal from the fuel level sensor that is outside of the expected range; typically, this signal varies as the fuel levels change.
What a healthy reading looks like
Expected voltage from the sensor is between 0.5V (empty) and 5.0V (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. Check the wiring and connectors at the fuel level sensor for damages, frays, or corrosion. Are they intact? If damaged, repair or replace as needed.
- 22. Measure the voltage output from the fuel level sensor with the key on and engine off. Is it between 0.5V and 5.0V? If no, the sensor may be faulty.
- 33. If voltage is correct, check for continuity between the sensor and the ECM connector. Do you have continuity? If no, repair wiring. If yes, replace the sensor.
Common causes
- Wiring issue between the sensor and ECM
- Faulty fuel level sensor
- Corroded or loose connections
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, but your fuel gauge may not show the correct fuel level, which could lead to running out of fuel unexpectedly.
Will this code come back after fixing?
If the wiring and sensor are properly repaired or replaced, the code should not return.
Why do I also see codes SPN 2712 or SPN 2714?
These codes are related to specific issues with the fuel level sensor or circuit that often appear together.
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