Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / D3
Possible causes
- Aftertreatment seal aged or cracked high
- Aftertreatment fitting loose medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–6 h
- Component: exhaust aftertreatment system b
- Component: exhaust seals
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012