Fuel Level

The computer is getting a signal that the fuel level is either too high or too low compared to the expected range. This could mean the fuel tank is overfilled or the level sensor is faulty.

The engine control module sees voltage readings from the fuel level sensor typically between 0.5 volts (empty) to 4.5 volts (full). If the voltage is outside this range, it triggers the fault code.

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.

1. 11. Inspect the wiring and connector at the fuel level sensor for damage or corrosion. If damaged, repair or replace the wiring/connector - Decision point: If the issue persists, continue; if fixed, check fuel level.
2. 22. Measure the voltage at the fuel level sensor with a multimeter. With the key on, engine off, voltages should be between 0.5V and 4.5V. - Decision point: If in range, sensor is likely okay, continue; if out of range, suspect faulty sensor.
3. 33. Check the fuel level sensor operation with the tank filled to known quantities (e.g., full, half, empty). The readings should reflect as expected - Decision point: If they reflect correctly, continue; if not, replace the sensor.

• Faulty fuel level sensor
• Wiring issues or poor connections
• Corroded or damaged connectors
• Incorrect fuel tank fill-up practice when level sensors are malfunctioning

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