Code result

P226B

Turbocharger/Supercharger A Boost Pressure Too High - Mechanical

High severity

What it means

Boost pressure on turbo A exceeds the upper threshold and the cause is mechanical (wastegate stuck closed, VGT vanes stuck closed) rather than electrical drive fault.

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

  • Wastegate or VGT stuck closed

    high

    One of the most commonly reported causes for this code — check this first.

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