Fuel Level Sensor "A" Circuit Range/Performance

What it means

The engine computer has detected that the fuel level sensor reading does not change logically as fuel is used, such as staying the same over a long distance or jumping abnormally. This usually points to a stuck float or a worn resistor track in the sensor.

Related codes: P0460P0462P0463P0464

Symptoms4

• Fuel gauge stays at one value despite driving a long distance.
• Gauge jumps between values at certain levels.
• Check engine light on.
• Risk of running out of fuel without warning.

Possible causes5

• Float arm stuck inside the tank.
• Worn resistor track at the most-used fuel levels.
• Deformed tank or bent float arm.
• High resistance in the connector or wiring.
• Float filled with fuel or damaged.

How to diagnose5

1. Watch the fuel level reading on a scan tool while driving a reasonable distance.
2. Compare the reading before and after refueling; it should change clearly.
3. Measure the sensor resistance at the connector and compare it with the manufacturer specification.
4. Inspect the connector and wiring for corrosion or high resistance.
5. Remove the sensor unit if needed and check float movement and the resistor track.

How to fix5

1. Clean the connector or repair the wiring if high resistance is found.
2. Free the float arm or correct its bend if possible.
3. Replace the fuel level sensor if the resistor track is worn.
4. Replace the whole pump module if the sensor is built into it.
5. Clear the codes and confirm the gauge changes normally with use and refueling.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a connector fault, and rises when the sensor or the pump module it is built into must be replaced.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions