P079ATransmission Friction Element A Slip Detected
Friction element A (the first clutch or band in the gear matrix) shows measurable slip while it should be fully engaged. Detected by comparing input/output speed sensors against the commanded gear ratio. Slip means the element cannot transmit full torque — risk of glazing the friction surfaces.
Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Transmisión · Caja y solenoides
La avería está en la transmisión: solenoides, sensores de velocidad o presión de aceite.
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- 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
Possible Causes
The components or conditions that trigger this code
- 1Worn friction discs in element A Low hydraulic pressure to element A Old ATF lacking friction modifier
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 3-12 hours. Estimated cost: €600-€
- 2Professional repair recommended
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Solenoids + transmission
* Diagnosis only: $50–$150
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