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 a sensor that checks the air pressure going into the turbocharger or supercharger isn't working right.
The P012A code is triggered when the Engine Control Module (ECM) detects a problem with the circuit of the turbocharger or supercharger inlet pressure sensor.
The turbocharger or supercharger inlet pressure sensor monitors the pressure of the air entering the turbocharger or supercharger. This data is used by the ECM to optimize engine performance. If the sensor's circuit is malfunctioning, the ECM cannot accurately control the air pressure, which can affect engine efficiency and power.
• Check Engine Light illuminated
• Reduced engine performance
• Poor acceleration
• Increased fuel consumption
• Faulty turbocharger/supercharger inlet pressure sensor
• Wiring issues such as shorts or open circuits
• Poor electrical connections
• Faulty 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.
• Use an OBD-II scanner to confirm the P012A code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the turbocharger/supercharger inlet pressure sensor with a multimeter.
• Check the ECM for faults.
• Replace the faulty turbocharger/supercharger inlet pressure sensor.
• Repair or replace damaged wiring or connectors.
• Update or reprogram the ECM if necessary.
• Clear the code and test drive the vehicle to ensure the repair was successful.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain the turbocharger system.
• Ensure all electrical connections are secure and free from corrosion.
• Use high-quality fuel and oil to prevent sensor contamination.
Sensor Issue
• Do not ignore the Check Engine Light; get the vehicle checked as soon as possible.
• Avoid driving aggressively until the issue is resolved.
• Consult a professional mechanic if unsure about the repairs.
Repairs may be covered under the vehicle's powertrain warranty if applicable.
This code has become more common with the increased use of turbocharged engines in modern vehicles.
Moderate – It is recommended to address this issue soon to prevent potential engine performance problems.
Driving with a malfunctioning turbocharger/supercharger system can lead to reduced engine performance and efficiency.
• Engine at operating temperature
• Vehicle in a safe, stationary position
The turbocharger/supercharger inlet pressure sensor is typically located near the turbocharger or supercharger, often mounted on the intake manifold.
Q: Can I drive with a P012A code?
A: While you may be able to drive, it is not recommended as it can lead to reduced engine performance and efficiency.
Q: How do I clear a P012A code?
A: After repairs, use an OBD-II scanner to clear the code, then test drive the vehicle to ensure the issue is resolved.
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