Code result
P23AA
Turbocharger Bypass Valve A Stuck
Moderate severity
What it means
The turbocharger bypass valve A (compressor bypass for surge protection or wastegate-style boost relief) is mechanically stuck. Boost control is impaired - either no relief on overspeed or no boost build-up depending on which position the valve is stuck in.
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
Valve stuck due to debris or actuator failure
highOne of the most commonly reported causes for this code — check this first.
Related help
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