Code result
P2BA5
Particulate Filter Feedgas Performance
High severity
What it means
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?
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
Exhaust leak upstream of DPF
highOne of the most commonly reported causes for this code — check this first.
EGT sensor pre-DPF drift
mediumA plausible cause — test and verify before replacing parts.
Related help
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