AutoCodesMercedes-Benz – P0464 Mercedes-Benz

P0464 Mercedes-Benz Code - Fuel Level Sensor Circuit Intermittent

Quick Answer

The fuel level sensor is mounted in the fuel level sensor unit. 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
P0464 Mercedes-Benz indicates Fuel Level Sensor Circuit Intermittent.
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 2,929
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 19, 2019
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Code P0464 Mercedes-Benz Description

The fuel level sensor is mounted in the fuel level sensor unit. The sensor detects a fuel level in the fuel tank and transmits a signal to the Engine Control Module (ECM). The fuel level sensor consists of two parts, one is mechanical float and the other side is variable resistor. The fuel level sensor output voltage changes depending on the movement of the fuel mechanical float.
OBDII Code P0464 Mercedes-Benz - Fuel Level Sensor Circuit Intermittent - AutoCodes.com
P0464 Mercedes-Benz Code - Fuel Level Sensor Circuit Intermittent

What are the Possible Causes of the DTC P0464 Mercedes-Benz?

  • Faulty fuel level sensor
  • Fuel level sensor harness is open or shorted
  • Fuel level sensor circuit poor electrical connection

How to Fix the DTC P0464 Mercedes-Benz?

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 P0464 Mercedes-Benz 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.

Need more information about the P0464 Mercedes-Benz code?

Need more information on how to fix the P0464 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0464 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

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 Mercedes-Benz Code

1. What does the OBDII code P0464 mean on a Mercedes-Benz?

P0464 indicates an intermittent issue in the fuel level sensor circuit, which measures and communicates the fuel level in the tank to the vehicle’s control module.

2. What are the common symptoms of code P0464 in a Mercedes-Benz?

Symptoms may include erratic or incorrect fuel gauge readings, an illuminated check engine light, and potential stalling if the fuel level is misread.

3. What causes the P0464 code to appear on a Mercedes-Benz?

Common causes include a faulty fuel level sensor, damaged wiring or connectors in the circuit, corrosion on electrical contacts, or a malfunctioning instrument cluster.

4. Can a dirty or damaged fuel tank cause code P0464?

Yes, debris or damage inside the fuel tank can interfere with the fuel level sensor's operation, leading to intermittent circuit issues.

5. How do you diagnose the P0464 code on a Mercedes-Benz?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the fuel level sensor and wiring for damage or corrosion, and testing the sensor’s resistance with a multimeter.

6. Is it safe to drive a Mercedes-Benz with a P0464 code?

While the vehicle may still be drivable, incorrect fuel gauge readings can lead to running out of fuel unexpectedly, which could cause stalling and unsafe driving conditions.

7. How is the P0464 code fixed on a Mercedes-Benz?

Repairs may include replacing the faulty fuel level sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or recalibrating the fuel gauge system.

8. Can a software update fix the P0464 code in some Mercedes-Benz models?

In rare cases, a software update to the vehicle's control module might resolve communication issues in the fuel level sensor circuit.

9. How much does it cost to repair the P0464 code on a Mercedes-Benz?

Repair costs vary but can range from $100 to $500, depending on whether the sensor, wiring, or other components need replacement.

10. Can a weak battery cause the P0464 code on a Mercedes-Benz?

A weak or failing battery can sometimes cause electrical issues, including intermittent communication problems in the fuel level sensor circuit.

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