Turbocharger Wastegate Solenoid B Malfunction
The P0247 code indicates a malfunction in the turbocharger wastegate solenoid B circuit. This solenoid controls the wastegate actuator, which regulates boost pressure by diverting exhaust gases away from the turbine. A fault can cause overboost or underboost conditions, leading to reduced engine performance and potential turbocharger damage.
01. Most Common Causes
- Faulty turbocharger wastegate solenoid B
- Open or shorted wiring in solenoid circuit
- Poor electrical connection at solenoid connector
- Engine control module (ECM) failure (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power or acceleration
- Turbocharger overboost or underboost
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect wiring and connector for damage or corrosion.
Step 3: Test solenoid resistance with multimeter (specs vary by vehicle).
Step 4: Check for power and ground at solenoid connector with key on.
Step 5: If wiring and solenoid are OK, test ECM output or replace solenoid.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause turbocharger damage or poor performance. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts (solenoid $50-$150) and labor ($100-$250).