• Reduced engine performance
• Check Engine Light illuminated
• Poor acceleration
• Faulty turbocharger/supercharger boost control solenoid
• Wiring issues such as shorts or open circuits
• Defective engine control module (ECM)
Turbocharger: A device that increases an engine's efficiency and power output by forcing extra air into the combustion chamber.
Supercharger: A device that increases the pressure or density of air supplied to an internal combustion engine.
• P0045
• P0046
Turbocharger/Supercharger Boost Control A Circuit Low
This code means that the car's computer is not getting the right signal from the turbocharger or supercharger, which helps the engine go faster. It's like when a toy car's remote control isn't working properly, so the car doesn't go as fast as it should.
The P0047 code indicates that the vehicle's engine control module (ECM) has detected a problem with the boost control circuit for the turbocharger or supercharger. Specifically, the signal from the control circuit is lower than expected.
The P0047 code is triggered when the ECM detects a low voltage condition in the boost control circuit for the turbocharger or supercharger. This circuit is responsible for controlling the amount of boost pressure the turbocharger or supercharger provides to the engine. A low signal can result from electrical issues, such as a faulty solenoid, wiring problems, or a defective ECM.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the turbocharger/supercharger boost control solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the turbocharger/supercharger boost control solenoid if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Volkswagen Golf
• Regularly inspect and maintain vehicle wiring.
• Ensure the turbocharger/supercharger is serviced as per manufacturer recommendations.
• Avoid harsh driving conditions that may stress the turbocharger/supercharger.
Engine Performance
• Have the vehicle inspected by a professional mechanic.
• Avoid driving under heavy load conditions until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on engine components.
The P0047 code has been associated with vehicles that have turbocharged or supercharged engines, particularly in models with higher mileage.
Moderate – While the vehicle may still be drivable, reduced performance and potential engine damage make it important to address this issue promptly.
Driving with a malfunctioning turbocharger or supercharger can lead to increased emissions and may not comply with local regulations. Always ensure your vehicle is safe and legal to drive.
• Engine running and at normal operating temperature
• Vehicle in a safe, stationary position
The turbocharger/supercharger boost control solenoid is typically located near the turbocharger or supercharger unit, often on or near the engine.
Q: Can I drive my car with a P0047 code?
A: While you might be able to drive, it's not recommended due to reduced performance and potential engine damage.
Q: How serious is a P0047 code?
A: It's moderately serious as it affects engine performance and should be addressed to prevent further damage.
