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Engine-Codes – GMC – P1431 GMC

P1431 GMC Code - Fuel Level Sensor 2 Circuit Performance

Quick Answer

The P1431 GMC code indicates a problem with the Fuel Level Sensor 2 Circuit Performance in the vehicle. Common causes include Faulty fuel level sensor, Wiring or connection issues in the fuel level sensor circuit, Corrosion or damage to the sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1431 GMC indicates Fuel Level Sensor 2 Circuit Performance.
Common causes
Common causes include Faulty fuel level sensor, Wiring or connection issues in the fuel level sensor circuit, Corrosion or damage to the sensor.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1431 GMC Description

The P1431 GMC code indicates a problem with the Fuel Level Sensor 2 Circuit Performance in the vehicle. The fuel level sensor is a crucial component that helps monitor the amount of fuel in the tank and sends this information to the vehicle's computer system. This data is essential for accurate fuel gauge readings and for the proper functioning of other related systems.

OBDII Code P1431 GMC - Fuel Level Sensor 2 Circuit Performance
P1431 GMC Code - Fuel Level Sensor 2 Circuit Performance

Common Causes of P1431 GMC

  1. Faulty fuel level sensor
  2. Wiring or connection issues in the fuel level sensor circuit
  3. Corrosion or damage to the sensor
  4. Issues with the engine control module
  5. Fuel system problems

Symptoms of P1431 GMC

  1. Inaccurate fuel gauge readings
  2. Check Engine Light illuminated
  3. Engine performance issues
  4. Reduced fuel efficiency
  5. Difficulty starting the vehicle

How to Fix P1431 GMC

  1. Diagnose the issue by using a scan tool to read the code and check the fuel level sensor's operation.
  2. Inspect the wiring and connections related to the fuel level sensor for any damage or corrosion.
  3. Test the fuel level sensor's resistance and voltage to determine if it is functioning correctly.
  4. Replace the fuel level sensor if it is found to be faulty, ensuring proper installation and connection.
  5. Clear the trouble codes, reset the vehicle's computer system, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1431 GMC

The typical repair costs for addressing the P1431 GMC code related to the Fuel Level Sensor 2 Circuit Performance can range from $150 to $400, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary depending on various factors. It's recommended to check with local shops for accurate estimates.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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