Powertrain, generic (extended)

P2747 Intermediate Shaft Speed Sensor B Circuit No Signal

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2747 is meant for the case where sensor B stays silent although the car is clearly moving. No manufacturer documents P2747 publicly. Ford's 2024 summary describes exactly this test for its intermediate sensors – vehicle inferred to be driving under positive torque, yet the sensor shows under 250 rpm lasting 2.5 s – but for sensor B it names only P2745, P2746 and P2748, so Ford apparently files missing pulses elsewhere. For the older single-sensor layout, Ford's 2012 strategy flags the intermediate shaft below 250 rpm for 5 s with turbine and output turning. Typical reasons are a sensor that has died internally, an open supply, or a reluctor that no longer passes the sensor. The module substitutes a calculated speed or goes into limp mode.

Likely causes

Sensor B failed internally and delivers no pulses
Open supply or signal wire, unplugged connector
Reluctor ring displaced or sensor not seated in its bore

Symptoms

  • Warning lamp and transmission message while driving
  • Limp-home mode, often stuck in one gear
  • Rough or missing upshifts

Repair estimate

DifficultyHardWorkshop job
Parts and labour€150–1,500
Time1–6 h

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

Parts involved

intermediate shaft speed sensor btone wheel

Related codes

P2745P2746P2748P0793P2751

References: fordservicecontent.com, newtonnet.co.uk, law.cornell.edu.