Powertrain, generic (extended)

P25B2 Fuel Level Sensor A or B Stuck

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P25B2 is the shared variant for tanks with two senders: the module has found that the level information is frozen but does not commit to which of the two senders is responsible. Ford lists it next to P25B0 and P25B1 under the same consumption-versus-reading check (100 to 120 miles, 25 to 60 % allowed mismatch) and, unlike the other two, keeps P25B2 as its own base code in the 2024 summary with failure type 00. When a calibration uses P25B2 instead of the single-sender codes is not explained publicly; a plausible case is a system that only evaluates the combined value of both senders. For the repair this means both senders, the jet pump and the wiring to each must be checked one after another, ideally by comparing each raw reading with the actual tank content. The 2014 Boss 302S list marks P25B2 as a lamp code.

Likely causes

One of the two senders mechanically stuck
Fuel no longer moved between tank halves by the jet pump
Corroded connector on the tank unit freezing one signal

Symptoms

  • Gauge stuck or moving far less than fuel used
  • Range display unreliable
  • Check engine lamp on

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€150–800
Time1.5–4 h

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

Parts involved

fuel level sensor afuel level sensor b

Related codes

P25B0P25B1P0460P2065

References: fordservicecontent.com, fordservicecontent.com, performanceparts.ford.com, law.cornell.edu.