OBD Guide
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P0048

Turbocharger/Supercharger Boost Control A Circuit High

P0048 is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Boost Control A Circuit High. Common causes: open or short circuit in boost control circuit wiring, turbocharger actuator malfunction. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Reduced engine power
  • Activating limp mode
  • Increased fuel consumption
  • Unstable idling
  • Whistling or unusual sounds from the turbocharger area
  • Check Engine Light Is On

Causes

  • Open or short circuit in boost control circuit wiring
  • Turbocharger actuator malfunction
  • Damage to connectors or contacts
  • Electronic boost control valve malfunction
  • Problems with the engine control unit (ECU)
  • Contact corrosion in electrical connections
  • Mechanical damage to wiring

How to Fix

  1. Connect a diagnostic scanner and read all error codes
  2. Check the voltage in the boost control circuit using a multimeter
  3. Visually inspect the wiring for damage, abrasions or corrosion.
  4. Check the integrity of the connectors and contacts of the turbocharger actuator
  5. Measure the actuator resistance according to technical documentation
  6. If necessary, replace damaged wiring or connectors
  7. Replace faulty actuator or boost control valve
  8. Clear error codes and test drive to see if the problem is resolved

Related codes

P0047P0049P0234P0235P0236P0237P0238

Error P0048 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P0048 code mean?

P0048 is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Boost Control A Circuit High

What causes a P0048 error code?

The most common causes of P0048 include: Open or short circuit in boost control circuit wiring; Turbocharger actuator malfunction; Damage to connectors or contacts; Electronic boost control valve malfunction.

How do I fix a P0048 diagnostic trouble code?

To fix P0048: Connect a diagnostic scanner and read all error codes. Check the voltage in the boost control circuit using a multimeter. Visually inspect the wiring for damage, abrasions or corrosion.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0048?

Limited driving only, diagnose soon

How much does it cost to fix P0048?

The estimated repair cost for P0048 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat