P2099Post Catalyst Fuel Trim System Too Rich (Bank 2)
Bank 2 counterpart of P2097. Post-catalyst trim on bank 2 has reached the rich limit — usually a depleted catalyst or a downstream sensor biased rich on the bank 2 side.
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 Failed emissions inspection Possibly slightly increased fuel consumption Sulfur (rotten egg) smell from exhaust under load
Possible Causes
The components or conditions that trigger this code
- 1Bank 2 catalyst oxygen storage exhausted Bank 2 downstream sensor biased rich
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: medium. Estimated time: 0.5-4 hours. Estimated cost: €60-€
- 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
Quick Info
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