P0247 indicates a malfunction with the 'B' wastegate actuator circuit or mechanism in a turbocharged engine. This component regulates turbo boost pressure, and a fault means the engine computer cannot properly control the turbocharger's output.
The actuator or its control solenoid can fail electrically or bind mechanically, preventing proper boost regulation.
Corroded, chafed, or disconnected wiring and connectors in the actuator circuit can disrupt the control signal.
If the actuator is vacuum-operated, cracked or blocked hoses will prevent the actuator from moving correctly.
Carbon buildup or physical damage can cause the wastegate valve itself to seize open or closed.
The engine computer's internal driver for the wastegate circuit may fail, though this is exceptionally rare.
You can drive it, but it is not recommended. The engine may experience uncontrolled boost levels, which could lead to catalytic converter damage or internal engine damage under heavy acceleration.
Not necessarily. The turbocharger itself may be fine; the issue is often isolated to the wastegate actuator, its control solenoid, or the related plumbing and wiring.
No, replacing the engine computer is almost never the correct fix for P0247. The vast majority of the time, the problem lies with a failed actuator, stuck valve, or damaged wiring, not the PCM.
The 'B' designation typically refers to the wastegate actuator on Bank 2 of a V-type engine, or a secondary actuator on engines with complex twin-scroll or sequential turbo setups.