P0461: Fuel Level Sensor "A" Circuit Range/Performance
The fuel level reading does not change the way the computer expects as you burn fuel, so the gauge may be wrong.
What P0461 means
The fuel level sensor, or sending unit, is a float on an arm inside the tank that moves a contact across a resistor strip. As fuel drops, resistance changes and the computer or gauge reads the new level. RepairPal explains that P0461 sets when the computer detects an irrational signal from the fuel level sensor and notes the sensor may be part of the fuel pump. The computer compares the fuel level to the fuel it has burned based on injector use. If you drive 100 miles and the level does not drop, or the reading jumps around, it flags a range or performance problem. The most common cause is a worn resistor strip in the sender, which creates dead spots. A stuck float, corroded connector or wiring fault can also do it. The code matters beyond the gauge because the EVAP leak test needs an accurate fuel level to run. Shops measure sender resistance at the tank connector across different fuel levels.
Common symptoms
- Check engine light on
- Fuel gauge stuck, jumping or inaccurate
- Low fuel light at the wrong time
- EVAP tests may not run
- Usually no change in how the car drives
Most common causes
- Worn fuel level sending unit
- Sending unit float arm stuck or damaged
- Wiring or connector problem at the tank
- Faulty instrument cluster on some vehicles
- Fuel pump module failure where the sender is built in
What to check yourself first
Note the trip odometer at each fill up and watch whether the gauge moves as you drive. Fill the tank completely and see whether the gauge reads full. Check for a recall or service bulletin, since some vehicles have known sender problems.
Typical fixes and what they cost
| Fix | Typical cost | Note |
|---|---|---|
| Replace fuel level sending unit | $1,608-$1,779 | The sender often comes with the fuel pump module, which raises the price. |
| Electrical diagnosis to find a wiring or connector fault | $122-$179 | For corroded connectors or wiring at the tank. |
| Check engine light diagnosis at a shop | $125-$183 | Checks whether the sender, wiring or cluster is at fault before dropping the tank. |
Typical US price ranges for parts and labor, not quotes. Your shop should confirm the cause with a diagnostic before replacing parts.
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Related codes
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- P0442 Evaporative Emission System Leak Detected (small leak)
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