Powertrain, generic · Transmission

P087D Clutch Position Sensor B Circuit High

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

Clutch position sensor B reports the position of the second clutch or its actuator, the counterpart of sensor A (P0805 ff). The only documented user is Ford's dry DPS6 dual clutch in Fiesta and Focus: clutch B, for reverse and the even gears, is moved by a three-phase motor whose Hall sensors give its position, and the gearbox module drives it through an internal motor driver. For P087D no maker is documented. It means the sensor signal is above its limit: an open signal or ground wire with a pull-up, or a short to voltage. As with sensor A (P0808), clutch B can then no longer be position-controlled and the gearbox goes into limp mode.

Likely causes

Signal or ground wire open
Signal wire shorted to voltage
Sensor faulty

Symptoms

  • MIL or transmission warning on
  • Jerky take-off or shifts
  • Reverse or even gears missing, limp mode

Repair estimate

DifficultyHardWorkshop job
Parts and labour€200–1,200
Time1–3 h

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

Parts involved

clutch position sensorclutch actuator motorsensor wiringtransmission control module

Related codes

P0808P087AP087BP087CP087E

References: law.cornell.edu, newtonnet.co.uk, patents.google.com.