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 the car's computer thinks the sensor that checks the temperature of the turbocharger or supercharger is not working right.
The engine control module (ECM) detects an issue with the temperature sensor circuit for the turbocharger or supercharger, indicating that the readings are out of the expected range.
The P2B71 code is triggered when the ECM detects a problem with the temperature sensor circuit associated with the turbocharger or supercharger. This could mean that the sensor is reporting temperatures that are too high, too low, or otherwise not within the expected range for normal operation.
• Check Engine Light illumination
• Reduced engine performance
• Possible overheating of the turbocharger/supercharger
• Unusual engine noises
• Faulty turbocharger/supercharger temperature sensor
• Wiring issues in the sensor circuit
• Poor electrical connections
• Faulty ECM
ECM: Engine Control Module
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
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the temperature sensor.
• Test the sensor for proper operation using a multimeter.
• Check the ECM for faults.
• Repair or replace damaged wiring or connectors.
• Replace the faulty temperature sensor.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• BMW 3 Series
• Regular maintenance checks
• Ensure proper electrical connections
• Avoid overheating the engine
Sensor Issue
• Address the issue promptly to avoid engine damage.
• Consult a professional mechanic if unsure about repairs.
Check with your vehicle manufacturer for warranty coverage on sensors.
This code has been associated with sensor failures in turbocharged vehicles since the introduction of OBD-II systems.
Moderate – It should be addressed soon to prevent potential engine damage.
Driving with a malfunctioning turbocharger/supercharger sensor can lead to engine damage and reduced performance. Address the issue promptly.
• Engine at operating temperature
• Turbocharger/supercharger engaged
The temperature sensor is typically located near the turbocharger or supercharger on the engine.
Q: Can I drive with a P2B71 code?
A: It's not recommended to drive for extended periods with this code as it may lead to engine damage.
Q: How do I clear a P2B71 code?
A: The code can be cleared with an OBD-II scanner after the issue is resolved.
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