OBD Guide
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P0049

Turbocharger/Supercharger A Turbine Overspeed

P0049 is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger A Turbine Overspeed. Common causes: wastegate stuck or malfunctioning, turbocharger actuator malfunction. Estimated repair cost: $278–1667.

Severity
🚨 Critical
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$278–1667 (est.)

Symptoms

  • Significant reduction in engine power
  • Unusual whistling or metallic noise from the turbocharger area
  • Black or blue smoke from the exhaust pipe
  • Increased oil consumption
  • Unstable engine operation at idle
  • Activating limp mode
  • Increased engine temperature

Causes

  • Wastegate stuck or malfunctioning
  • Turbocharger actuator malfunction
  • Clogged or damaged turbocharger oil passages
  • Boost pressure sensor malfunction
  • Damage or wear of turbine bearings
  • Variable Geometry Turbine (VGT) control system malfunction
  • Clogged air filter or intake system
  • Malfunction of the electronic control unit of the turbocharger

How to Fix

  1. Connect a diagnostic scanner and read all error codes
  2. Check the level and condition of the engine oil
  3. Inspect the turbocharger for external damage and oil leaks
  4. Check the operation of the wastegate and its actuator
  5. Test the boost pressure sensor
  6. Check the condition of the air filter and intake system
  7. Check the turbocharger oil system
  8. If necessary, replace faulty components or the entire turbocharger
  9. Clear error codes and test drive to see if the problem is resolved

Related codes

P0046P0047P0048P0234P0235P0236P0299

Error P0049 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0049 code mean?

P0049 is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger A Turbine Overspeed

What causes a P0049 error code?

The most common causes of P0049 include: Wastegate stuck or malfunctioning; Turbocharger actuator malfunction; Clogged or damaged turbocharger oil passages; Boost pressure sensor malfunction.

How do I fix a P0049 diagnostic trouble code?

To fix P0049: Connect a diagnostic scanner and read all error codes. Check the level and condition of the engine oil. Inspect the turbocharger for external damage and oil leaks. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0049?

Yes, but get it checked soon

How much does it cost to fix P0049?

The estimated repair cost for P0049 is $278–1667. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat