P205F

Reductant System Performance Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
AdBlue system error message on the dashboard
Unpleasant exhaust smell

Causes

Reagent system nozzle is dirty or clogged
Poor quality or freezing of AdBlue reagent
NOx sensor malfunction
Problems with the AdBlue system pump
Open or short circuit in control circuit

How to Fix

Check the level and quality of AdBlue reagent
Diagnose the reagent injection nozzle
Check the operation of the AdBlue system pump
Test NOx sensors and related circuits
If necessary, replace faulty system components

Related codes

P205E P205D P20EE