Code result
P249C
Excessive Time To Enter Closed Loop Reductant Injection Control
Moderate severity
What it means
After cold start the AdBlue injection runs open-loop until SCR temperature is reached. The transition into closed-loop is taking longer than calibrated.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
SCR warm-up slow
highOne of the most commonly reported causes for this code — check this first.
Related help
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