P0901Clutch A Actuator Control Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Set when the clutch A actuator circuit is electrically present but does not behave as expected, for instance when the measured current or response deviates too far from the target. Usage differs by maker. Ford lists P0901 among the DPS6 PowerShift codes, and trade guidance recommends swapping the two identical clutch motors: if the fault moves to clutch B, the motor is bad. Honda added P0901 on the 2015 TLX V6 nine-speed automatic for abnormal resistance in the clutch pressure control solenoid circuits, with failsafe gear hold and MIL. FCA recall 16V529 on 9-speed models also uses it to decide on a harness replacement. P0900, P0902 and P0903 are the pure circuit faults; P090B is the clutch B counterpart.
- What you may notice
- Check engine light on
- Shudder, harsh engagement or missed shifts
- Failsafe mode with a held gear
- Likely causes
- LikelyWeak or worn clutch A actuator motor (dual-clutch units)
- PossibleHigh resistance in the transmission harness or sub-harness
- RareTCM fault or outdated TCM software
- 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 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.