Code result
P2BD3
Exhaust Aftertreatment System B Leak
High severity
What it means
The ECM detects a leak in exhaust aftertreatment system B. Pressure or temperature signals indicate gas escape between aftertreatment components, impairing emission control.
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
Aftertreatment seal aged or cracked
highOne of the most commonly reported causes for this code — check this first.
Aftertreatment fitting loose
mediumA plausible cause — test and verify before replacing parts.
Related help
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