Fuel Level Sensor Circuit Low
Indicates a problem with the fuel level signal being too low.
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 fuel level sensor, which tells the computer how much gas is in the tank, is sending a low voltage signal, suggesting the system thinks there's almost no fuel when there might be plenty.
What the computer is actually seeing
The engine control module (ECM) expects a voltage signal from the fuel level sensor between 0.5V (empty) and 4.5V (full). If it sees a voltage consistently below 0.5V, it triggers this code.
What a healthy reading looks like
Expect a fuel level sensor output of 0.5V (empty) to 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. Inspect the fuel level sensor connector for corrosion or damage - fix if necessary. Decision: Is the connector good? Yes: Go to step 2. No: Repair or replace connector.
Common causes
- Faulty fuel level sensor
- Wiring issues in signal circuit
- Faulty ECM processing of signal
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive with this code present?
Yes, but fuel level readings may be inaccurate. Keep an eye on fuel consumption.
Will this code come back after clearing it?
If the underlying issue isn't fixed, it will likely return.
Why do I see this code with other SPN codes?
Multiple related codes may indicate a systemic issue with the fuel system or electrical faults.
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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