Powertrain, generic · Transmission

P090D Clutch B Actuator Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Set when the control circuit of the clutch B actuator shows a high state, i.e. a motor or control line is shorted to battery voltage. Ford documents P090D as the short-to-power check of the clutch B motor in the DPS6 PowerShift transmission of the Fiesta and Focus. Ford customer satisfaction program 20B23, covering some 2016-2017 Focus cars, names P090D together with P0900 and several hall and driver codes as signs of failed clutch actuator motors, with erratic shifting, vibration and a lit check engine light; dealers replaced both motors. P090A and P090C are the open and ground faults of the same circuit, P0903 the clutch A equivalent. CARB requires circuit checks on such transmission outputs.

Likely causes

Failed clutch B actuator motor (Ford program 20B23)
Motor or control wire shorted to a supply line
Faulty motor driver in the TCM

Symptoms

  • Check engine light on
  • Erratic or missed shifts and vibration
  • Limp mode, possibly no drive

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€150–900
Time1–3 h

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

Parts involved

clutch b actuatorwiring harnesstcm

Related codes

P090AP090BP090CP0903

References: newtonnet.co.uk, static.nhtsa.gov, law.cornell.edu.