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TuningBot DTC Database · v4.37.15

P0049 Turbocharger/Supercharger A Turbine Overspeed

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEngineOBD2

What P0049 means

P0049
Turbocharger/Supercharger A Turbine Overspeed Generic · engine Data confidence 78%

The control module detected a fault associated with the Turbocharger/Supercharger A Turbine Overspeed circuit or function; the stored code identifies the affected component rather than a single failure mode.

Symptoms

  • Possible reduced power or limp mode
  • MIL illuminated
  • Possible abnormal turbocharger noise

Possible causes

Mechanical fault

Recommended checks

  • Compare specified vs actual boost with live data
  • Check actuator movement over the full range
  • Check hoses and vacuum lines
  • Inspect wiring and connectors

Related and nearby codes

How to read P0049

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

049

Specific fault index within the subsystem.

Frequently asked questions about P0049

What does P0049 mean?

Turbocharger/Supercharger A Turbine Overspeed. The control module detected a fault associated with the Turbocharger/Supercharger A Turbine Overspeed circuit or function; the stored code identifies the affected component rather than a single failure mode.

Is P0049 generic or manufacturer-specific?

P0049 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0049 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningDyno-tested results by model and engine See the results →

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