AutoCodes – Chevrolet – P1431 Chevrolet

P1431 Chevrolet Code - Fuel Level Sensor 2 Circuit Performance

Quick Answer

With the engine running, the Powertrain Control Module (PCM) detects one of these 3 conditions 1. Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level Sensor circuit poor electrical connection. 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 Chevrolet indicates Fuel Level Sensor 2 Circuit Performance.
Common causes: Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level Sensor circuit poor electrical connection.
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.

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Code Popularity 8,653

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1431 Chevrolet Description

With the engine running, the Powertrain Control Module (PCM) detects one of these 3 conditions
1. With the secondary fuel tank not empty, more than 150 miles have been accumulated and then the PCM did not detect that the fuel level in the right fuel tank moved by at least 0 80 gallons
2. With the secondary fuel tank not empty and the primary fuel tank not full, engine runtime over 60 minutes, that the primary tank did not achieve the top of its range Observe after operating the engine for greater than 60 minutes that the fuel in the right fuel tank will transfer to the left fuel tank
3. With the secondary fuel tank empty and the primary fuel tank full, that the fuel level in both fuel tanks did not change after traveling more than 200 miles With the secondary fuel tank empty, observe if the primary fuel level decreased after 200 miles

OBDII Code P1431 Chevrolet - Fuel Level Sensor 2 Circuit Performance - AutoCodes.com — P1431 Chevrolet Code - Fuel Level Sensor 2 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1431 Chevrolet?

Faulty Fuel Level Sensor
Fuel Level Sensor harness is open or shorted
Fuel Level Sensor circuit poor electrical connection

How to Fix the DTC P1431 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1431 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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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.