P050ACold Start Idle Control System Performance
During the cold-start phase the ECU runs an elevated idle speed and a richer mixture to bring the catalyst above light-off temperature quickly. The cold-start idle does not behave as commanded - speed sags, hunts, or fails to come up. Possible causes are intake leaks active when cold, an IAC valve sticking, or implausible coolant temperature.
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
Motor · Powertrain
La falla pertenece al grupo motopropulsor (motor y gestión electrónica).
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Possible Causes
The components or conditions that trigger this code
- 1Intake leak only when cold (gasket shrinks) IAC valve sticking when cold
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: medium. Estimated time: 0.8-2.5 hours. Estimated cost: €120-€
- 2DIY possible
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)
Varies by diagnosis
* Diagnosis only: $50–$150
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