P20D0Exhaust Aftertreatment Fuel Injector A Stuck Closed
HC injector A is mechanically stuck closed — DPF regeneration cannot reach burn-off temperature. A flow-deviating injector throws off cylinder balance — adjacent cylinders run leaner/richer to compensate, often masking the root cause until the trim limit is hit.
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.
Symptoms You Will Notice
What you may observe when this code appears
- Check engine light on Misfire or rough idle on the affected cylinder Increased fuel consumption Possible fuel smell or smoke from exhaust
Possible Causes
The components or conditions that trigger this code
- 1Injector stuck closed Carbon or debris buildup preventing free movement Component wear with age - mechanical play
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 1-5 hours. Estimated cost: €250-€
- 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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