Powertrain, generic (extended)

P2462 Particulate Filter Pressure Sensor B Circuit Intermittent/Erratic

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2462 covers a sensor B signal that drops out or jumps for short moments without staying outside its range long enough for the low or high codes. Ford is the only maker found documenting it: the 2024 gasoline particulate filter summary lists P2462 next to P2460 and P2461 in the continuously running analog circuit check, with about 5 s needed to register a fault, and no separate threshold is published. On Ford's older 6.7 L diesel the B position belongs to the delta pressure unit mounted at the filter. The cause is nearly always mechanical or electrical intermittency: a terminal that loses contact as the engine shakes, a harness rubbing on a bracket, or moisture that comes and goes in the connector. Wiggling the harness while watching live data usually finds it. Sensor A has the matching code P2456.

Likely causes

Terminal losing contact under engine vibration
Harness rubbing on a bracket or exhaust part
Moisture entering the connector intermittently

Symptoms

  • Malfunction indicator lamp on, sometimes only after rough roads or rain
  • Pressure reading jumping in live data

Repair estimate

DifficultyEasyDIY possible
Parts and labour€0–300
Time0.3–2 h

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

Parts involved

dpf pressure sensor b

Related codes

P245EP245FP2460P2461P2456

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