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P143E 2016 Chevrolet Silverado Code - Fuel Level Sensor 2 Reference Feedback Performance

Quick Answer

The P143E diagnostic trouble code (DTC) indicates a performance issue with the fuel level sensor 2 in a 2016 Chevrolet Silverado. Common causes include Faulty fuel level sensor 2, which may be damaged or worn out, Electrical issues, such as short circuits or open circuits in the wiring harness connected to the sensor, Corrosion or poor connections at the sensor’s electrical connectors. 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
P143E 2016 Chevrolet Silverado indicates Fuel Level Sensor 2 Reference Feedback Performance.
Common causes
Common causes include Faulty fuel level sensor 2, which may be damaged or worn out, Electrical issues, such as short circuits or open circuits in the wiring harness connected to the sensor, Corrosion or poor connections at the sensor’s electrical connectors.
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 Oct 30, 2024
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Code P143E 2016 Chevrolet Silverado Description

The P143E diagnostic trouble code (DTC) indicates a performance issue with the fuel level sensor 2 in a 2016 Chevrolet Silverado. This code is triggered when the Engine Control Module (ECM) detects an inconsistency between the expected fuel level readings and the actual feedback from the fuel level sensor. The fuel level sensor is crucial for providing accurate readings to the vehicle's fuel gauge, which informs the driver of the remaining fuel in the tank.

OBDII Code P143E 2016 Chevrolet Silverado - Fuel Level Sensor 2 Reference Feedback Performance
P143E 2016 Chevrolet Silverado Code - Fuel Level Sensor 2 Reference Feedback Performance

Common Causes of P143E 2016 Chevrolet Silverado

  1. Faulty fuel level sensor 2, which may be damaged or worn out.
  2. Electrical issues, such as short circuits or open circuits in the wiring harness connected to the sensor.
  3. Corrosion or poor connections at the sensor’s electrical connectors.
  4. Contaminated fuel or debris in the fuel tank affecting sensor operation.
  5. Malfunctioning ECM that misinterprets the sensor's feedback.

Symptoms of P143E 2016 Chevrolet Silverado

  1. Erratic fuel gauge readings, fluctuating between empty and full.
  2. Engine stalling due to incorrect fuel level readings.
  3. Difficulty starting the engine, particularly when the gauge indicates low fuel.
  4. Warning lights illuminated on the dashboard, such as the check engine light.
  5. Poor fuel economy or performance issues, potentially due to incorrect fuel delivery.

How to Fix P143E 2016 Chevrolet Silverado

  1. Diagnostic Testing: Begin by using an OBD-II scanner to confirm the P143E code and check for any additional codes that may provide insight into related issues.
  2. Visual Inspection: Inspect the wiring and connectors associated with the fuel level sensor for signs of damage, corrosion, or loose connections.
  3. Sensor Replacement: If the fuel level sensor is determined to be faulty, replace it with a new, OEM-quality part to ensure proper functionality.
  4. Wiring Repair: If any wiring issues are found, repair or replace damaged wires and ensure all connections are secure and clean.
  5. ECM Reprogramming: After repairs, it may be necessary to reset the ECM or reprogram it to ensure it accurately reads the new sensor data.

Cost to Fix P143E 2016 Chevrolet Silverado

The typical repair costs for addressing a P143E code can range from $150 to $600, depending on the specific repairs needed. This estimate includes the cost of parts, such as a new fuel level sensor, which can range from $50 to $300, and labor costs that generally fall between $80 and $150 per hour. The total labor time for diagnostics and repairs may take 1 to 3 hours, depending on the complexity of the issue. It's important to note that labor rates can vary significantly based on location, vehicle make and model, and engine type. Metropolitan areas or dealerships may charge higher rates, while independent shops often offer more competitive pricing. For the most accurate estimate, it's advisable to check local repair shop rates.

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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.

Frequently Asked Questions about P143E 2016 Chevrolet Silverado Code

What does the OBDII code P143E mean on a 2016 Chevrolet Silverado?

P143E indicates an issue with Fuel Level Sensor 2 Reference Feedback Performance, meaning the sensor is not providing accurate data to the fuel management system.

What are the symptoms of code P143E on a 2016 Chevrolet Silverado?

Common symptoms include incorrect fuel gauge readings, the check engine light turning on, and possible erratic engine performance.

What causes the P143E code on a 2016 Chevrolet Silverado?

Potential causes include a faulty fuel level sensor, wiring issues, corrosion in the sensor circuit, or a malfunctioning fuel pump module.

Can a bad fuel level sensor cause the truck to stall?

While unlikely, inaccurate fuel level readings might lead to fuel system miscalculations, which could indirectly affect engine performance.

How do you diagnose code P143E on a Chevrolet Silverado?

Start by scanning for codes, inspecting the wiring and connectors for damage or corrosion, and testing the fuel level sensor and its circuit for proper operation.

Can a loose or damaged connector cause the P143E code?

Yes, a loose, damaged, or corroded connector can disrupt the sensor's feedback signal, triggering the P143E code.

How can I fix the P143E code on my 2016 Chevrolet Silverado?

Repairs may involve replacing the faulty fuel level sensor, fixing damaged wiring, cleaning corroded connectors, or, in rare cases, replacing the fuel pump module.

Is it safe to drive with the P143E code active?

Driving is generally safe, but inaccurate fuel gauge readings may lead to running out of fuel unexpectedly, so resolving the issue promptly is recommended.

How much does it cost to repair the P143E code on a Chevrolet Silverado?

Repair costs vary, but replacing a fuel level sensor typically ranges from $150 to $300, including parts and labor.

Can the P143E code be cleared without fixing the issue?

Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the code will likely return as the issue persists.

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