Powertrain, generic · Transmission

P090C Clutch B Actuator Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Set when the control circuit of the clutch B actuator shows a low state, which on the documented application means a short to ground. Ford defines P090C as the short-to-ground check of the clutch B motor in the DPS6 PowerShift gearbox, paired with P090A for an open circuit and P090D for a short to power. Ford's TCM program 14M02 for 2011-2015 Fiesta and Focus also lists P090C among the codes that a defective TCM can cause, so the module belongs on the suspect list along with the motor and its wiring. Swapping the identical clutch motors helps: if the fault moves to P0902, the motor is bad. CARB requires circuit monitoring of such outputs. Expect missing gears, erratic shifts or no drive.

Likely causes

Clutch B actuator motor with internal short to ground
Failed TCM output stage (Ford program 14M02 lists this code)
Chafed motor wire touching ground

Symptoms

  • Check engine light on
  • Even gears or reverse unavailable
  • Limp mode or no drive

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€150–1,200
Time1–3 h

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

Parts involved

clutch b actuatorwiring harnesstcm

Related codes

P090AP090BP090DP0902

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