Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that your car's computer has detected a problem with the sensor that measures how much boost (extra power) the turbocharger or supercharger is producing.
The P0235 code is triggered when the engine control module (ECM) detects a problem with the boost pressure sensor circuit. This sensor monitors the pressure created by the turbocharger or supercharger.
The P0235 code indicates an issue with the Turbocharger/Supercharger Boost Sensor 'A' Circuit. This sensor is responsible for providing the ECM with data on the pressure levels within the intake manifold, which is crucial for managing engine performance and efficiency. A fault in this circuit can lead to incorrect air-fuel mixture and engine performance issues.
• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel economy
• Engine may enter limp mode
• Faulty boost pressure sensor
• Wiring issues or poor electrical connections
• Faulty turbocharger or supercharger
• ECM issues
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.
• Use an OBD-II scanner to confirm the P0235 code.
• Visually inspect the boost pressure sensor and wiring for damage.
• Test the boost pressure sensor with a multimeter.
• Check for vacuum leaks in the intake system.
• Replace the boost pressure sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Check and repair any vacuum leaks.
• Replace or repair the turbocharger or supercharger if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Volkswagen Jetta
• Regularly inspect and maintain the turbocharger system.
• Ensure all sensors and wiring are in good condition.
• Use high-quality fuel to prevent deposits.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regular maintenance can prevent sensor issues.
Check with your vehicle manufacturer for specific warranty coverage on emissions-related components.
The P0235 code has been a common issue in turbocharged vehicles, especially as they age and components wear out.
Moderate – This issue should be addressed soon to avoid further engine performance problems.
Driving with a malfunctioning turbocharger system can lead to increased emissions and may not comply with emissions regulations.
• Engine at operating temperature
• Vehicle under load (e.g., during acceleration)
The boost pressure sensor is typically located on the intake manifold or near the turbocharger.
Q: Can I drive my car with a P0235 code?
A: While it may be possible to drive with this code, it is not recommended as it can lead to reduced performance and potential engine damage.
Q: How do I reset the Check Engine Light after fixing the issue?
A: After repairing the issue, use an OBD-II scanner to clear the code and reset the Check Engine Light.
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