Code result
P2B97
Exhaust Pressure Control Valve A Position Exceeded Learning Limit
High severity
What it means
The required adaptation offset for the exhaust pressure control valve A position exceeds the calibrated learning window. Mechanical wear or sensor drift beyond compensation.
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
Valve mechanism worn at end-stops
highOne of the most commonly reported causes for this code — check this first.
Position sensor reference drifted
mediumA plausible cause — test and verify before replacing parts.
Related help
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