FUEL LEVEL SENSOR - SIGNAL INCORRECT
The fuel level sensor is reporting a value outside expected parameters.
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What it means (plain English)
The fuel level sensor in the tank is sending a reading that's off, meaning the computer thinks there's either too much or too little fuel regardless of the actual amount.
What the computer is actually seeing
The engine control module (ECM) expects the fuel level to be between 5% and 95% of the tank capacity. If the reading is below 5% or above 95% when the actual tank level is within range, a fault is logged.
What a healthy reading looks like
Expected fuel level sensor voltage should be 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. Check the fuel level in the tank. Confirm it matches what's reported on the dashboard. If not, go to step 2.
- 22. Inspect wiring and connectors to the fuel level sensor for fraying, corrosion, or loose connections. Repair or replace as necessary, then test again.
- 33. Using a multimeter, measure voltage output from the fuel level sensor. It should range from 0.5V to 4.5V based on fuel level. If it's outside this range with known fuel levels, replace the sensor.
- 44. Clear the fault code and monitor for re-occurrence. If it returns, proceed to inspect the ECM for faults. If no code returns, the issue is resolved.
Common causes
- Faulty fuel level sensor
- Wiring issues or poor connections
- ECM calibration error
- Faulty in-tank fuel pump assembly
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Yes, but be aware that you may experience inaccurate fuel readings, which could lead to running out of fuel unknowingly.
Will this code come back after repairs?
If the repairs are done correctly and all connections are good, this code should not return.
Why does this code pair with other codes?
Other codes can indicate related issues, often pointing to the same subsystem or electrical circuit that affects multiple sensors.
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