Powertrain
generic / SAE
P2859
Clutch A Pressure Disengagement Performance/Too Low
Clutch A disengagement pressure is below the calibrated minimum. Clutch may not separate cleanly under load.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / 59
Possible causes
- Hydraulic pump output pressure low high
- Pressure regulator characteristic drift medium
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 500–3000 €
- Estimated time: 3–12 h
- Component: clutch a
- Component: clutch actuator a
- Component: transmission pump
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012