OBD-II code · Powertrain (generic, extended)
P2BD3 Exhaust Aftertreatment System B Leak
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 with P2BD3?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyAftertreatment seal aged or cracked
- PossibleAftertreatment fitting loose
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Exhaust Aftertreatment System B, Exhaust Seals
Related codes
- P2BD2Exhaust Aftertreatment System A Leak
- P2BD0Battery Charging System Negative Contactor B Control Circuit Low
- P2BD1Battery Charging System Negative Contactor B Control Circuit High
- P2BD4Motor Electronics Coolant Pump C Control Circuit/Open
- P2BD5Motor Electronics Coolant Pump C Control Circuit Low
- P2BD6Motor Electronics Coolant Pump C Control Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.