OBD-II code · Powertrain (generic, extended)
P2BA5 Particulate Filter Feedgas Performance
The ECM detects that the exhaust gas composition reaching the particulate filter (feedgas) deviates from the calibrated profile. Soot input rate cannot be modelled correctly, affecting regen scheduling.
Is it safe to drive with P2BA5?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyExhaust leak upstream of DPF
- PossibleEGT sensor pre-DPF drift
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
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
- Particulate Filter, Exhaust Gas Temp Sensor Pre Dpf
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.