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P2D24: Turbocharger Interstage Pressure Sensor A Circuit High

The ECM detects a circuit high fault on the turbocharger interstage pressure sensor a circuit. Reading cannot be used reliably for control.

Medium severity. Can I keep driving?Drive without demanding power and go to a repair shop soon. If you see a lot of blue smoke or hear a metallic noise, shut off the engine.

Symptoms

  • Check engine light on
  • Significant power loss / limp mode
  • Possible blue or black smoke from exhaust
  • Whistling or hissing sound from intake

Most likely causes

  • Signal wire shorted to B+
  • Open sensor
  • Connector pins corroded - high contact resistance

What to check, in order

Start with the simplest. You can tick off each step.

Good to know

  • Repair difficulty: medium
  • It can trigger limp mode.
  • It affects emissions.

What each character of P2D24 means

  • P: Powertrain: engine and transmission
  • 2: Generic code: same on every make
  • D: Subsystem depends on the code range
  • 24: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2D24?

Drive without demanding power and go to a repair shop soon. If you see a lot of blue smoke or hear a metallic noise, shut off the engine.

What causes code P2D24?

The most common causes are: signal wire shorted to B+; open sensor; connector pins corroded - high contact resistance.

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.