Fuel Level Sensor Circuit High
The fuel level sensor is reporting an excessively high signal.
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What it means (plain English)
The car's computer thinks the fuel tank is more full than it actually is because the sensor is sending too many volts, usually over 4.5V.
What the computer is actually seeing
The fuel level sensor is outputting voltage readings that are too high (more than 4.5V), indicating a full tank continuously or incorrectly.
What a healthy reading looks like
Fuel level sensor expected voltage is usually 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. Inspect the fuel tank and sensor wiring for damage, corrosion, or loose connectors. Is everything intact? Yes: continue to step 2. No: repair the visible issues and retest.
- 22. Measure the voltage at the fuel level sensor connector with the key on (engine off). Is the voltage higher than 4.5V? Yes: replace the fuel level sensor. No: continue to step 3.
- 33. Check for continuity in the wiring from the sensor to the engine control module. Is continuity present? Yes: move to step 4. No: repair any broken wiring and retest.
- 44. Replace the fuel gauge module if all previous checks pass and the issue persists.
Common causes
- Faulty fuel level sensor
- Short in sensor wiring
- Corrosion in connectors
- Faulty fuel gauge module
- Incorrect fuel type causing sensor fault
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, it is drivable but you may get incorrect fuel level readings.
Will this code return after fixing?
If the sensor or wiring issues are properly addressed, the code should not return.
Why might this code pair with other codes?
Related codes often indicate problems with the same system, like fuel level errors or gauge errors.
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