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Engine-Codes – Generic – P1431

P1431 Code - Fuel Level Sensor 2 Circuit Performance

Quick Answer

The P1431 code indicates a problem with the Fuel Level Sensor 2 Circuit Performance in the vehicle. Common causes include Faulty fuel level sensor, Wiring or connector issues in the fuel level sensor circuit, Corrosion or damage to the sensor or its components. 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 indicates Fuel Level Sensor 2 Circuit Performance.
Common causes
Common causes include Faulty fuel level sensor, Wiring or connector issues in the fuel level sensor circuit, Corrosion or damage to the sensor or its components.
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 06, 2024
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Code P1431 Description

The P1431 code indicates a problem with the Fuel Level Sensor 2 Circuit Performance in the vehicle. This sensor is responsible for measuring the fuel level in the tank and sending this information to the vehicle's ECU (Engine Control Unit). The ECU uses this data to calculate fuel consumption, optimize engine performance, and display the fuel level on the dashboard.

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

Common Causes of P1431

  1. Faulty fuel level sensor
  2. Wiring or connector issues in the fuel level sensor circuit
  3. Corrosion or damage to the sensor or its components
  4. Issues with the ECU receiving or interpreting sensor data
  5. Fuel system contamination or debris affecting sensor performance

Symptoms of P1431

  1. Inaccurate fuel gauge readings
  2. Check Engine Light is illuminated
  3. Engine misfires or stalling
  4. Poor fuel efficiency
  5. Difficulty starting the vehicle

How to Fix P1431

  1. Diagnose the issue using a diagnostic scanner to determine the exact cause of the problem.
  2. Inspect the fuel level sensor and its wiring for any damage or corrosion.
  3. Replace the faulty fuel level sensor if necessary.
  4. Clear the error code from the ECU and reset the system.
  5. Test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1431

The cost of repairing a Fuel Level Sensor 2 Circuit Performance issue can vary depending on the make and model of the vehicle, the location of the repair shop, and the extent of the problem. On average, the repair cost for this issue can range from $150 to $400, including parts and labor. It's recommended to consult with a qualified mechanic or repair shop for a more accurate estimate based on your specific vehicle.

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Code P1431 Information for Specific Makes

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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