Code result

P259A

Turbocharger Boost Control Position Sensor B Performance - Stuck Low

Moderate severity

What it means

Same condition as the A-side stuck-low fault, but on the second sensor / second turbo. Position sensor B reads stuck near the low end while the actuator is commanded.

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

  • Actuator mechanically stuck near low end

    high

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

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