P0247 medium Severity

P0247: Turbocharger/Supercharger Wastegate Solenoid B Malfunction

Reduced boost control resulting in diminished engine performance, potential limp mode or reduced acceleration

Overview

P0247 indicates an electrical or operational fault in the turbocharger wastegate solenoid B circuit affecting boost regulation

Common Symptoms

  • Illumination of Check Engine Light
  • Reduced engine power and acceleration
  • Poor turbo response or boost pressure issues
  • Increased fuel consumption
  • Possible unusual turbocharger noises

Most Common Causes

Faulty wastegate solenoid B high

Electrical or internal failure of solenoid coil/mechanism is frequently reported as root cause

Damaged or corroded wiring/connectors in solenoid circuit high

Open or short circuits between PCM and solenoid often trigger P0247

Wastegate actuator or vacuum line leaks/blockages medium

Leaks affect wastegate operation; less common but can mimic electrical faults

PCM/ECM output or signal malfunction low

Rare; consider only after isolating solenoid and circuit issues

Diagnostic Steps

  1. Connect an OBD‑II scanner and record all current codes, clear them and re‑test to confirm persistence of P0247
    Expected: Code P0247 should reappear if issue is persistent
    Interpretation: Confirms problem is not transient
  2. Visually inspect wastegate solenoid B wiring and connectors for corrosion, breaks, or loose connections
    Expected: Wiring harness intact with no visible damage
    Interpretation: If damaged wiring is found, repair may resolve code
  3. Measure solenoid resistance with a multimeter against OEM specs
    Expected: Resistance within manufacturer’s range
    Interpretation: Out‑of‑range indicates faulty solenoid
  4. Check for proper power supply and ground at solenoid with ignition on
    Expected: 12V supply and solid ground present
    Interpretation: Lack of correct voltage/ground indicates wiring or PCM issue
  5. Perform functional test commanding wastegate solenoid B via scan tool
    Expected: Solenoid actuates and boost changes accordingly
    Interpretation: No response supports solenoid or circuit fault

Repair Solutions

Replace wastegate solenoid B medium
Estimated Cost: $150 - $500

Typical repair when solenoid electrical test fails

Repair/replace damaged wiring or connectors medium
Estimated Cost: $50 - $300

Cost depends on extent of wiring harness damage

Inspect and repair vacuum lines or wastegate actuator easy
Estimated Cost: $20 - $200

Relevant if leaks/blockages found

PCM/ECM reprogram or replacement hard
Estimated Cost: $300 - $1500

Only after ruling out all other causes due to low incidence

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Misinterpreting vacuum leaks or mechanical wastegate faults as purely electrical solenoid issues

Frequently Asked Questions

Can you explain the meaning of P0247?

Turbocharger/Supercharger Wastegate Solenoid B Malfunction is the standard definition for P0247. This diagnostic code is triggered when the ECU detects a problem in the Air Intake.

Is it safe to drive with a P0247 code?

With a severity level of medium, reduced boost control resulting in diminished engine performance, potential limp mode or reduced acceleration

How do I know if I have code P0247?

You may experience the following: Illumination of Check Engine Light, Reduced engine power and acceleration, Poor turbo response or boost pressure issues.

What parts fail when P0247 is set?

This code is frequently triggered by: Faulty wastegate solenoid B, Damaged or corroded wiring/connectors in solenoid circuit, Wastegate actuator or vacuum line leaks/blockages.

Estimated repair costs for different causes of P0247

Repair costs depend on the specific failure. A simple Inspect and repair vacuum lines or wastegate actuator replacement is relatively affordable ($20-$200), whereas a PCM/ECM reprogram or replacement repair is more expensive, potentially reaching $1500.

What cars are affected by the P0247 code?

P0247 is not specific to any one brand. It can appear on Ford, Dodge, Toyota, Honda, Jeep, and other vehicles.

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