P0247
UniversalTurbocharger Wastegate Solenoid B Malfunction
The wastegate helps regulate turbocharger boost, and a solenoid controls part of that process on systems equipped with this setup. P0247 means the vehicle detected a malfunction related to wastegate solenoid B. The cause could be electrical, in the solenoid or its control path, or in related boost-control components. Depending on the fault, the engine may make less power or control boost incorrectly; some vehicles may show no noticeable symptoms.
⚠️ Before You Begin (Safety First)
If the vehicle loses power, behaves unpredictably, or shows signs of severe engine or turbocharger trouble, pull over safely and arrange an inspection. Avoid hard acceleration or heavy-load driving until the issue is diagnosed.
Common Symptoms
- The check-engine light may be on, sometimes with no noticeable change in how the vehicle drives.
- Reduced power or slower acceleration may occur if boost is not controlled as intended.
- Boost response may feel inconsistent if the wastegate control system is not operating correctly.
- The engine may enter a reduced-power mode on vehicles that use this response to limit risk from a detected boost-control fault.
Common Causes
- A fault within wastegate solenoid B.
- A damaged, loose, corroded, or poorly connected wire or connector in the solenoid control circuit.
- A problem with the circuit's power supply or control path.
- A fault in a related wastegate actuator or mechanical wastegate component.
- A leak, blockage, or damage in related pressure or vacuum hoses, where the vehicle uses them.
Diagnostic Steps
- Confirm the stored code and note any other codes or available freeze-frame information; related codes may help identify whether the issue is electrical or boost-control related.
- With the engine off and cool, visually inspect accessible wiring and connectors around the turbocharger control system for looseness or visible damage. Avoid touching hot components.
- Check accessible pressure or vacuum hoses for disconnection, cracking, or obvious damage, if fitted.
- Do not replace the solenoid based on the code alone. If the visual checks do not reveal an issue, have the circuit and wastegate operation tested using vehicle-specific service information.
When to Call a Professional
Start by confirming the code and reviewing available freeze-frame and scan data. Use vehicle-specific service information to check the solenoid control circuit and connector, then assess the solenoid and related wastegate, hoses, and actuator operation. A code alone does not confirm that the solenoid needs replacement.
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Commonly Asked Questions
Does P0247 prove that wastegate solenoid B has failed?
No. The code identifies a detected malfunction associated with the solenoid system, but wiring, connectors, the control path, hoses, or related wastegate parts may also be involved.
Can I drive with P0247?
If the vehicle runs normally, a cautious trip for diagnosis may be possible, but avoid hard acceleration and heavy loads. Stop safely if power loss or abnormal engine behavior makes driving unsafe.
Why might there be no symptoms?
A detected fault may not noticeably affect engine operation in every vehicle or driving situation. The warning light and scan data still warrant diagnosis.
How is an electrical fault distinguished from a mechanical wastegate problem?
A technician can inspect the connector and wiring, review scan data, test the control circuit according to vehicle-specific specifications, and assess the solenoid and wastegate mechanism.
Browse Available Code Guides
Previous and next available guides in database record order, across makes. Adjacent entries may share a code number and do not necessarily describe related faults.