Fuel Level Sensor Circuit High
The fuel level sensor is reporting a higher than expected voltage.
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What it means (plain English)
The fuel level sensor inside the tank is sending a signal too high, which could mean it's faulty or there's a wiring issue.
What the computer is actually seeing
The engine control module (ECM) receives a voltage from the fuel level sensor that exceeds its normal range, typically over 4.5 volts while the tank is not empty.
What a healthy reading looks like
Normal fuel level sensor output should range from 0.5 to 4.5 volts, depending on fuel level.
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. Inspect the wiring and connectors for damage or corrosion. Ensure all connections are secure.
- 22. Check the voltage at the fuel level sensor connector while the ignition is on (engine off). It should be between 0.5 and 4.5 volts.
- 3 - If voltage is above 4.5 volts, go to step 3.
- 4 - If voltage is normal, test the fuel gauge and ECM for faults.
- 53. Perform a resistance test on the fuel level sensor; compare readings against the manufacturer specifications.
- 6 - If resistance is out of range, replace the fuel level sensor.
- 7 - If resistance is normal, there may be a short circuit in the wiring or ECM fault.
Common causes
- Faulty fuel level sensor
- Wiring issues (shorts to power)
- Corroded connector terminals
- Fuel gauge module failure
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive with this code?
Yes, but be aware that the fuel gauge may be inaccurate.
Will this code come back after clearing it?
It may come back if the underlying issue is not fixed.
Why does this code pair with SPN 0131?
Both codes involve fuel level issues, often linked to the same faulty sensor or circuit.
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