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 in the car's engine that measures how much air is coming into the turbocharger is showing a reading that's too high.
The engine control module (ECM) has detected a high voltage signal from the turbocharger/supercharger inlet pressure sensor B, indicating a possible issue with the sensor or its circuit.
The P2377 code indicates that the turbocharger/supercharger inlet pressure sensor B is reporting a pressure reading that is higher than expected. This could be due to a malfunctioning sensor, wiring issues, or an actual increase in pressure beyond the sensor's range.
• Check Engine Light is on
• Reduced engine performance
• Poor fuel economy
• Faulty turbocharger/supercharger inlet pressure sensor B
• Wiring issues such as open or short circuits
• 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 of the air entering the engine, similar to a turbocharger, but driven by the engine itself.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for the sensor.
• Test the sensor for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the turbocharger/supercharger inlet pressure sensor B.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect and maintain turbocharger components.
• Ensure proper electrical connections.
• Use quality fuel and oil.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Avoid hard acceleration until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage related to emissions and engine components.
This code has been associated with issues in vehicles equipped with turbochargers, particularly those with high mileage or aftermarket modifications.
Moderate – It should be addressed soon to avoid potential engine damage.
Driving with a malfunctioning turbocharger system can lead to decreased performance and increased emissions, which may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle at idle
The turbocharger/supercharger inlet pressure sensor B is typically located near the turbocharger on the intake side of the engine.
Q: Can I drive with a P2377 code?
A: It is not recommended to drive for extended periods with this code, as it may lead to further engine issues.
Q: Will a P2377 code affect my car's performance?
A: Yes, it can lead to reduced engine performance and poor fuel economy.
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