P20D2Exhaust Aftertreatment Fuel Injector B Control Performance
The aftertreatment HC injector A is electrically OK but does not deliver the commanded fuel mass during regeneration — partial blockage or worn nozzle.
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
- 1Nozzle partially coked
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 1-4 hours. Estimated cost: €200-€
- 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
Quick Info
Dig Deeper
Videos, images and service manuals
Have Another Code?
Look it up directly: