P2D1CCold Start EGR A/B Ratio Performance
During cold start, the ratio between EGR channel A and B flow does not match the calibrated cold-start strategy. One channel responds slower or sticks at low temperature.
Can I keep driving? NO
STOP the vehicle in a safe place. Continuing to drive may cause serious engine damage or put your safety at risk.
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.
Symptoms You Will Notice
What you may observe when this code appears
- Check engine light on Pinging or knocking under load Power loss and hesitation Possible rough idle Failed emissions inspection (NOx)
Possible Causes
The components or conditions that trigger this code
- 1One EGR valve sluggish at cold Carbon-clogged passages on one channel
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 1.5-6 hours. Estimated cost: €300-€
- 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)
Varies by diagnosis
* Diagnosis only: $50–$150
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