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2002 BMW 530I
3.0L I6 M54•RWD•AUTOMATIC•gas•M54B30
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor497Torque2183Fluid8DTC1267Battery1Maintenance0Recalls4
P0049critical severityPowertrain

Turbo/Supercharger Turbine Overspeed

on 2002 BMW 530i 3.0L I6 M54 · RWD

What this code means

The PCM detected the turbocharger turbine is spinning faster than the maximum allowed speed.

Symptoms

  • Check Engine Light
  • Whining noise from turbo
  • Excessive boost
  • Possible engine damage

Common causes

  • Wastegate stuck closed
  • Boost control solenoid failure
  • Overboosting condition
  • Exhaust restriction

Diagnostic steps

  1. Check wastegate operation
  2. Test boost control solenoid
  3. Monitor boost pressure
  4. Inspect turbo for damage

Repair notes

Immediately address to prevent engine damage. Repair wastegate or boost control system.

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