OBD Guide
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P00C2

Turbocharger/Supercharger Bypass Valve B Control Circuit High

P00C2 is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Bypass Valve B Control Circuit High. Common causes: short circuit of the bypass valve control wire to power (+12v), boost pressure control solenoid valve internal failure. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light is on, engine emergency mode is possible
  • Significant loss of power and traction during acceleration
  • The turbine “does not move” - the boost pressure is low
  • Or, on the contrary, signs of overcharging: detonation, jerking during acceleration
  • Increased fuel consumption and exhaust smoke

Causes

  • Short circuit of the bypass valve control wire to power (+12V)
  • Boost pressure control solenoid valve internal failure
  • Damage to the connector or wiring in the turbocharger area (high temperatures)
  • Mechanical jamming of the bypass valve
  • Engine ECU malfunction

How to Fix

  1. Read codes and real-time boost pressure data
  2. Inspect control valve wiring and connector - pay particular attention to thermal insulation damage
  3. Disconnect the valve connector and measure the voltage on the signal wire (should not be 12V at rest)
  4. Measure the resistance of the valve winding (the norm is usually 20–30 Ohms)
  5. Check the mechanical movement of the bypass valve and its pneumatic actuator
  6. If the wiring is correct, replace the boost pressure control valve (wastegate solenoid)

Related codes

P00C0P00C1P00C3P0234P0299P0243

Error P00C2 by Vehicle Brand

AcuraAudiBAICBMWBYDBuickCadillacChanganCheryChevroletChryslerCitroenDodgeDongfengExeedFAWFordForthingFotonGACGMGMCGeelyGreat WallHavalHondaHongqiHyundaiInfinitiJACJaecooJaguarJeepJetourKaiyiKiaLadaLexusLi AutoLifanLincolnLivanMazdaMercedes-BenzMercuryMitsubishiNIONissanOldsmobileOmodaOpelPeugeotPlymouthPontiacRenaultSWMSaturnSkodaSkywellSubaruSuzukiTankToyotaVolkswagenVolvoVoyahXPengZeekrZotye

FAQ

What does the P00C2 code mean?

P00C2 is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Bypass Valve B Control Circuit High

What causes a P00C2 error code?

The most common causes of P00C2 include: Short circuit of the bypass valve control wire to power (+12V); Boost pressure control solenoid valve internal failure; Damage to the connector or wiring in the turbocharger area (high temperatures); Mechanical jamming of the bypass valve.

How do I fix a P00C2 diagnostic trouble code?

To fix P00C2: Read codes and real-time boost pressure data. Inspect control valve wiring and connector - pay particular attention to thermal insulation damage. Disconnect the valve connector and measure the voltage on the signal wire (should not be 12V at rest). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P00C2?

Yes, but get it checked soon

How much does it cost to fix P00C2?

The estimated repair cost for P00C2 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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