P25B0: Fuel Level Sensor A Stuck

P25B0 means the main fuel level sender keeps reporting the same level although the engine has clearly been burning fuel. Ford runs this as a continuous check: the module totals the fuel injected, converts it into a share of tank capacity and compares that with how far the sender reading has moved. Depending on where the reading is frozen, the allowed mismatch is 60 % above a 90 % level, 30 % below 10 % and 25 % in between, and a full check can take 100 to 120 miles. Ford's 2012 summary still filed this fault under P0460; the 2014 Boss 302S list already marks P25B0 as a lamp code, and the 2024 summary reports it as P0460 with failure type 2A. GM covers a frozen sender with P0461 instead. CARB names the stuck fuel level sensor as a rationality check. The gauge stays put, so running dry is a real risk.

Low severity. Can I keep driving?You can normally keep driving. If it affects the fuel level, do not trust the gauge and refuel earlier than usual.

Symptoms

Fuel gauge stays at the same mark over a long distance
Engine runs out of fuel while the gauge still shows fuel
Check engine lamp on

Most likely causes

Float arm caught on the tank wall, baffle or pump module
Worn spot on the sender resistor track holding the wiper at one value
Float soaked with fuel and sunk to the bottom
Fuel consumption calculation in the PCM not matching the tank

What to check, in order

Start with the simplest. You can tick off each step.

Check the connector and wiring
Use the scanner to command the movement and compare the actual position with the requested one.
Use live data to compare the reading with actual conditions
Measure power, ground, and signal
Replace the sensor if the circuit is good

Good to know

Repair difficulty: medium
It affects emissions.

What each character of P25B0 means

P: Powertrain: engine and transmission
2: Generic code: same on every make
5: Speed and idle
B0: Specific fault in that system

Frequently asked questions

Can I keep driving with code P25B0?

You can normally keep driving. If it affects the fuel level, do not trust the gauge and refuel earlier than usual.

What causes code P25B0?

The most common causes are: float arm caught on the tank wall, baffle or pump module; worn spot on the sender resistor track holding the wiper at one value; float soaked with fuel and sunk to the bottom.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.