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P0464 2017 GMC Sierra Code - Fuel Level Sensor Circuit Intermittent

Quick Answer

The P0464 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the fuel level sensor circuit being intermittent. Common causes include Faulty fuel level sensor, Corroded or damaged wiring in the fuel level sensor circuit, Malfunctioning ECM. 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
P0464 2017 GMC Sierra indicates Fuel Level Sensor Circuit Intermittent.
Common causes
Common causes include Faulty fuel level sensor, Corroded or damaged wiring in the fuel level sensor circuit, Malfunctioning ECM.
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 13, 2024
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Code P0464 2017 GMC Sierra Description

The P0464 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the fuel level sensor circuit being intermittent. The fuel level sensor is a crucial component of the vehicle's fuel system, responsible for accurately measuring the amount of fuel in the tank and sending this information to the vehicle's engine control module (ECM). When the ECM detects an intermittent issue with the fuel level sensor circuit, it means that there is a disruption in the communication between the sensor and the ECM, leading to inaccurate fuel level readings.

OBDII Code P0464 2017 GMC Sierra - Fuel Level Sensor Circuit Intermittent
P0464 2017 GMC Sierra Code - Fuel Level Sensor Circuit Intermittent

Common Causes of P0464 2017 GMC Sierra

  1. Faulty fuel level sensor.
  2. Corroded or damaged wiring in the fuel level sensor circuit.
  3. Malfunctioning ECM.
  4. Corrosion in the fuel tank.
  5. Loose or damaged connections in the fuel level sensor circuit.

Symptoms of P0464 2017 GMC Sierra

  1. Inaccurate fuel level readings on the dashboard gauge.
  2. Fluctuating fuel level readings while driving.
  3. Check Engine Light illuminated.
  4. Engine stalling or hesitation during acceleration.
  5. Poor fuel efficiency.

How to Fix P0464 2017 GMC Sierra

  1. Perform a diagnostic scan to confirm the P0464 code and identify the specific cause of the issue.
  2. Inspect the wiring and connections in the fuel level sensor circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the fuel level sensor for proper function and replace if found to be faulty.
  4. Clear the DTC and reset the ECM to ensure the issue has been resolved.
  5. Test drive the vehicle to verify that the fuel level sensor circuit is functioning correctly and that the symptoms have been eliminated.

Cost to Fix P0464 2017 GMC Sierra

The typical repair costs for addressing a P0464 code on a 2017 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the cost of diagnosing the problem, replacing any faulty components such as the fuel level sensor, and resetting the ECM. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. It's advisable to consult with a trusted mechanic or auto repair shop for a more accurate cost estimate based on your specific situation.

What does this mean?

Tech Notes for P0464 2017 GMC Sierra

A low fuel level can trigger this code. Before replacing any parts, try filling up the fuel tank and erasing the engine code. If the problem persists, it may be necessary to replace the fuel level sensor.

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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 P0464 2017 GMC Sierra Code

1. What does the OBDII code P0464 mean on a 2017 GMC Sierra?

The P0464 code indicates an intermittent issue with the fuel level sensor circuit, meaning the fuel level readings from the sensor are not consistent or reliable.

2. What are the common symptoms of code P0464 on a 2017 GMC Sierra?

Symptoms may include erratic or inaccurate fuel gauge readings, the check engine light turning on, and potential difficulty determining the actual fuel level.

3. What causes the P0464 code to appear on a 2017 GMC Sierra?

Common causes include a faulty fuel level sensor, damaged or corroded wiring or connectors, a malfunctioning instrument cluster, or an issue with the engine control module (ECM).

4. Can a faulty fuel pump cause the P0464 code on a 2017 GMC Sierra?

While the fuel pump itself is unlikely to cause this code, the fuel level sensor, which is often integrated with the fuel pump assembly, could be the culprit.

5. How is the P0464 code diagnosed on a 2017 GMC Sierra?

A technician will use a scan tool to review the code, inspect the wiring and connectors for damage or corrosion, test the fuel level sensor for proper operation, and check for other related codes.

6. How do you fix the P0464 code on a 2017 GMC Sierra?

Repairs may include replacing the fuel level sensor, repairing damaged wiring or connectors, or reprogramming/updating the ECM if necessary.

7. Can I drive my 2017 GMC Sierra with the P0464 code?

While the vehicle may still be drivable, it’s risky because the fuel gauge may not display the correct fuel level, potentially leading to running out of fuel unexpectedly.

8. How much does it cost to fix the P0464 code on a 2017 GMC Sierra?

Repair costs vary depending on the issue but typically range from $150 to $600, with higher costs if the fuel level sensor or fuel pump assembly needs replacement.

9. Can a loose gas cap cause the P0464 code on a 2017 GMC Sierra?

No, a loose gas cap is unrelated to the fuel level sensor circuit and is unlikely to trigger this specific code.

10. Is the P0464 code a common issue for the 2017 GMC Sierra?

It’s not extremely common but can occur due to normal wear and tear on the fuel level sensor or wiring issues, especially in older or high-mileage vehicles.

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