Powertrain, generic (extended)

P25B0 Fuel Level Sensor A Stuck

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

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.

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

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

Repair estimate

DifficultyMediumDIY possible
Parts and labour€120–600
Time1–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel level sensor a

Related codes

P25B1P25B2P0460P0461P25DC

References: fordservicecontent.com, fordservicecontent.com, newtonnet.co.uk, performanceparts.ford.com.