P0901
Clutch Actuator Circuit Range/Performance
The clutch actuator does not meet performance criteria during commanded movement, indicating mechanical or hydraulic resistance beyond expected range.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: shop_only
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Common causes
Ordered by how often each turns out to be the cause.
- Actuator worn or sluggishCommon
- Clutch disc worn beyond adaptationPossible
- Sensor element aged beyond calibration windowLess likely
Parts involved
- Clutch Actuator
- Clutch Assembly
P0901 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.