Fuel Level Sensor Fault
Fuel level sensor is reading outside of expected range.
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What it means (plain English)
The fuel level sensor tells the computer how much fuel is in the tank. If it's not working, the computer can't tell correctly how much fuel is available.
What the computer is actually seeing
The engine control unit sees an incorrect fuel level, either too high or too low, often measuring below 10 ohms or above 250 ohms when it should be in the 40-150 ohm range.
What a healthy reading looks like
Fuel level sensor should read between 40-150 ohms when the tank is between 1/4 and 3/4 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 connector for the fuel level sensor for damage or corrosion. Repair or replace if found faulty.
- 22. Measure the resistance of the fuel level sensor. It should read between 40-150 ohms when the tank is at a proper level. If not, replace the sensor.
- 33. Inspect the fuel tank for any signs of damage or leaks that might affect sensor readings. Repair if needed.
- 44. Clear the code and monitor for a return. If the code returns, further investigate the vehicle's ECU or wiring harness. Check for shorts or grounding issues.
Common causes
- Wiring issues (shorts or breaks) in the fuel level sensor circuit
- Faulty fuel level sensor
- Damaged connector at the fuel sensor
- Incorrectly calibrated fuel sender unit
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but monitor your fuel level closely as you may not have an accurate reading.
Will this issue come back after fixing?
If the wiring and sensor are properly repaired or replaced, it should not return.
Why does this code show up with other codes?
Fuel level sensor issues often accompany other fuel system faults, indicating related problems.
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