Powertrain, generic (extended)

P247F Exhaust Gas Temperature Out of Range (Bank 2 Sensor 4)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P247F flags an unacceptable reading from the fourth exhaust temperature probe of bank 2, the position that on most layouts sits behind the particulate filter. A genuine reading near the limit there means heat is leaving the filter, which points to a runaway regeneration. No manufacturer documents P247F publicly. The bank 1 counterpart P247B appears only in Ford's 2015 diesel summary, which trips it once the probe exceeds roughly 1150 °C; by 2023 Ford checked probe 4 against a temperature model (P246E) instead. CARB demands range and rationality monitoring for such inputs. Before the probe is replaced, compare it with the bank 1 probe 4 and inspect the filter, because a cracked substrate can follow repeated overheating.

Likely causes

Overloaded particulate filter burning off too fast
Probe ageing with readings drifting upwards
Probe swapped with another position after a repair

Symptoms

  • Engine warning lamp lit
  • Regeneration blocked or power limited

Repair estimate

DifficultyHardWorkshop job
Parts and labour€60–2,500
Time0.5–5 h

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

Parts involved

egt sensor b2s4

Related codes

P247BP247CP247DP247EP246E

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