Powertrain
generic / SAE
P07A2
Transmission Friction Element A Performance/Stuck Off
Friction element A does not lock up when commanded — its hydraulic circuit cannot bring the clutch pack into full engagement. Either the apply piston is stuck, the seal is leaking past the piston, or the supplying pressure regulator is failing.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / A2
Possible causes
- Leaking apply seal high
- Stuck apply piston medium
- Carbon or debris buildup preventing free movement low
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: 800–4500 €
- Estimated time: 4–14 h
- Component: clutch pack a
- Component: apply piston
- Component: apply seal
- MIL / check engine light
Sources
References
sae:J2012