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.
1. Most Common Causes
- Faulty turbocharger wastegate solenoid B
- Open or shorted wiring in solenoid circuit
- Poor electrical connections
- Engine control module (ECM) failure
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced engine power and acceleration
- Turbocharger boost pressure issues (overboost or underboost)
- Possible limp mode activation
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm code P0247 and check for related codes.
Step 2: Visually inspect wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test solenoid resistance with a multimeter (compare to manufacturer specs).
Step 4: Check for proper voltage and ground at solenoid connector with ignition on.
Step 5: If wiring and solenoid are okay, test ECM output or replace solenoid.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause reduced performance and potential turbocharger damage. Limp mode may limit speed to protect the engine.
How much does it cost to fix?▼
Repair costs typically range from $50 to $150 for parts and labor, depending on whether the solenoid or wiring needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.