P090AClutch B Actuator Control Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Watches the drive circuit of the actuator for clutch B, the second clutch of a dual-clutch transmission, and sets when the module finds an open circuit. Ford uses it on the DPS6 PowerShift of the Fiesta and Focus: the clutch B electric motor is tested for driver faults (P087A), hall sensor faults (P087B), sequence errors (P087E), an open circuit (P090A), a short to ground (P090C) and a short to power (P090D). Trade guidance for the DPS6 is to swap the two identical clutch motors; if the code moves to the clutch A equivalent P0900, the motor is defective, otherwise the harness or TCM is. CARB requires circuit monitoring of such outputs. Shifting becomes erratic and the gearbox may refuse to drive.
- What you may notice
- Check engine light on
- Even gears or reverse missing, erratic shifts
- Limp mode or no drive
- Likely causes
- LikelyFailed clutch B actuator motor
- PossibleLoose connector or broken wire to the clutch B motor
- RareFaulty motor driver inside the TCM
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €150 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.