Turbocharger Boost Control Position Sensor "A" Circuit Intermittent

The boost control position sensor is sending an intermittent or unstable signal, making it unreliable for the engine to control turbo boost pressure. The turbocharger may spool up erratically, power delivery may be inconsistent, or boost may spike dangerously. The sensor, connector, or wiring should be inspected for loose connections or damage.

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