Powertrain, generic · Transmission

P090B Clutch B Actuator Control Circuit Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Set when the clutch B actuator circuit is electrically connected but the actuator does not respond as commanded, for example too slowly or with an unexpected current draw. Ford uses P090B on the DPS6 PowerShift transmission. Trade guidance for this gearbox starts with a visual check of the harness from the TCM to the clutch B motor, then swaps the two identical clutch motors: if the code becomes P0901, the motor with its built-in position sensor is faulty; if P090B stays, the circuit or TCM needs pinpoint testing. Ford's TCM program 14M02 for 2011-2015 Fiesta and Focus also lists P090B as a code where the TCM itself can be the cause. P090A, P090C and P090D are the pure circuit faults of clutch B.

Likely causes

Worn or sluggish clutch B actuator motor
TCM fault (Ford program 14M02 lists this code)
Damaged harness between TCM and clutch B motor

Symptoms

  • Check engine light on
  • Shudder or slipping in even gears and reverse
  • Delayed or missed shifts, possible limp mode

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€150–1,500
Time1–4 h

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

Parts involved

clutch b actuatorwiring harnesstcm

Related codes

P090AP090CP090DP0901

References: gearsmagazine.com, static.nhtsa.gov, law.cornell.edu.