P249C

Excessive Time To Enter Closed Loop Reductant Injection Control

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–111 (est.)

Symptoms

Increased reagent consumption (AdBlue)
Check Engine Light Is On
Reduced engine power
Increased NOx emissions
SCR error message on dashboard

Causes

Poor quality or freezing of AdBlue reagent
Reagent injection nozzle malfunction
Problems with NOx sensors
Clogged SCR catalytic converter
SCR control unit malfunction

How to Fix

Check the level and quality of AdBlue reagent
Diagnose the reagent injection nozzle
Check the functionality of NOx sensors
Clean or replace SCR catalytic converter
Check the SCR control unit for errors

Related codes

P249D P20EE P229F