Code result
P2BA4
Catalyst Feedgas Performance
Moderate severity
What it means
The ECM detects that the exhaust gas composition reaching the catalyst (feedgas) deviates from the calibrated profile. Pre-cat O2 measurement and air-fuel control are inconsistent with engine operation.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Long-term fuel trim drifted out of nominal range
highOne of the most commonly reported causes for this code — check this first.
Exhaust leak upstream of catalyst
mediumA plausible cause — test and verify before replacing parts.
Related help
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