Engine-CodesSubaru – P0464 Subaru

P0464 Subaru Code - Fuel Level Sensor Circuit Intermittent

Quick Answer

The P0464 code for Subaru vehicles indicates a problem with the fuel level sensor circuit intermittently malfunctioning. Common causes include Faulty fuel level sensor, Corroded or damaged wiring in the sensor circuit, Poor electrical connection 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
P0464 Subaru indicates Fuel Level Sensor Circuit Intermittent.
Common causes
Common causes include Faulty fuel level sensor, Corroded or damaged wiring in the sensor circuit, Poor electrical connection 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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0464 Subaru Description

The P0464 code for Subaru vehicles indicates a problem with the fuel level sensor circuit intermittently malfunctioning. The fuel level sensor is responsible for sending information to the vehicle's fuel gauge to display the correct fuel level to the driver. When this sensor circuit is not functioning properly, it can lead to inaccurate readings on the fuel gauge, which can cause inconvenience for the driver and potentially lead to running out of fuel unexpectedly.

OBDII Code P0464 Subaru - Fuel Level Sensor Circuit Intermittent
P0464 Subaru Code - Fuel Level Sensor Circuit Intermittent

Common Causes of P0464 Subaru

  1. Faulty fuel level sensor
  2. Corroded or damaged wiring in the sensor circuit
  3. Poor electrical connection to the sensor
  4. Issues with the fuel pump module
  5. Fuel tank contamination affecting sensor readings

Symptoms of P0464 Subaru

  1. Inaccurate fuel level readings on the fuel gauge
  2. Fluctuating fuel gauge readings
  3. Check Engine Light illuminated
  4. Engine stalling or hesitation
  5. Difficulty starting the vehicle

How to Fix P0464 Subaru

  1. Diagnose the issue by using a scan tool to read the trouble code and test the fuel level sensor circuit.
  2. Inspect the wiring and connections related to the fuel level sensor for any damage or corrosion. Repair or replace as needed.
  3. Test the fuel level sensor itself to determine if it is functioning correctly. Replace the sensor if it is faulty.
  4. Reset the trouble code and test the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the fuel system.

Cost to Fix P0464 Subaru

The typical repair costs for addressing a P0464 code on a Subaru vehicle can range from $200 to $500, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check local rates to obtain a more accurate estimate for this repair.

Tech Notes for P0464 Subaru









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When is the Code Detected?

An intermittent low voltage is sent from the sensor is sent to Engine Control Module (ECM).

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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 Subaru Code

1. What does the OBDII code P0464 mean on a Subaru?

The P0464 code indicates an intermittent issue with the fuel level sensor circuit, meaning the vehicle's computer is receiving unreliable data about the fuel level.

2. What are the common symptoms of the P0464 code in a Subaru?

Symptoms may include erratic or inaccurate fuel gauge readings, the check engine light turning on, and possible difficulty estimating remaining fuel.

3. What causes the P0464 code to appear in a Subaru?

Common causes include a faulty fuel level sensor, damaged wiring or connectors in the fuel sensor circuit, or, less commonly, issues with the vehicle's powertrain control module (PCM).

4. Can I still drive my Subaru with a P0464 code?

Yes, you can typically continue driving, but you may not get accurate fuel level readings, risking running out of fuel unexpectedly.

5. How do I diagnose the P0464 code on my Subaru?

Use an OBDII scanner to confirm the code, inspect the fuel level sensor wiring and connectors for damage, and test the sensor for proper operation with a multimeter.

6. How do I fix the P0464 code on a Subaru?

Repairs may involve replacing a faulty fuel level sensor, repairing damaged wiring or connectors in the fuel sensor circuit, or, in rare cases, reprogramming or replacing the PCM.

7. How much does it cost to fix the P0464 code on a Subaru?

Costs vary, but replacing a fuel level sensor typically ranges from $200 to $500, including parts and labor. Repairs to wiring or connectors may be less expensive.

8. Can a bad fuel pump cause the P0464 code?

While uncommon, a failing fuel pump assembly that includes the fuel level sensor can contribute to this code if the sensor is integrated and malfunctioning.

9. Will clearing the P0464 code solve the problem?

Clearing the code may turn off the check engine light temporarily, but unless the underlying issue is resolved, the code is likely to return.

10. Is the P0464 code related to poor fuel economy?

This code itself does not directly affect fuel economy, but inaccurate fuel readings can make it harder to track usage effectively.

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