Code result
P2D1E
Reductant System Leak Detected – Large Leak
High severity
What it means
The SCR module detects a large leak in the reductant system. Pressure cannot be maintained for dosing operations.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Reductant supply line disconnected or split
highOne of the most commonly reported causes for this code — check this first.
Tank seal failed
mediumA plausible cause — test and verify before replacing parts.
Related help
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