Powertrain
generic / SAE
P07A3
Transmission Friction Element A Stuck On
Friction element A does not release when commanded — the apply piston cannot retract, leaving the clutch or band engaged. The transmission cannot complete shifts that need element A released, leading to harsh engagement or stall when stopping.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / A3
Possible causes
- Stuck apply piston (cannot retract) high
- Broken or weak return spring 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: return spring
- MIL / check engine light
Sources
References
sae:J2012