AutoCodes – Honda – P0463 Honda

P0463 Honda Code - Fuel Level Sensor Circuit High Voltage

Quick Answer

The Fuel Level Sensor (Fuel Gauge Sending Unit) is incorporated into the fuel pump and installed in the fuel tank. Common causes include Faulty Fuel Level Sensor (Fuel Gauge Sending Unit), 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
P0463 Honda indicates Fuel Level Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Fuel Level Sensor (Fuel Gauge Sending Unit), 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 18,199
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 19, 2023
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Code P0463 Honda Description

The Fuel Level Sensor (Fuel Gauge Sending Unit) is incorporated into the fuel pump and installed in the fuel tank. Using a built-in potentiometer and float, it converts the movement of the float to electrical signals as an output that corresponds to fuel level variations in the fuel tank. The fuel level, which is indicated by the gauge control module, is sent to the Powertrain Control Module (PCM) via the Controller Area Network (CAN). If the received voltage information from the gauge control module is high or low for a set time, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).
OBDII Code P0463 Honda - Fuel Level Sensor Circuit High Voltage - AutoCodes.com
P0463 Honda Code - Fuel Level Sensor Circuit High Voltage

What are the Possible Causes of the DTC P0463 Honda?

  • Faulty Fuel Level Sensor (Fuel Gauge Sending Unit)
  • Fuel Level Sensor harness is open or shorted
  • Fuel Level Sensor circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0463 Honda?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0463 Honda 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 P0463 Honda code?

Need more information on how to fix the P0463 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0463 Honda code diagnosed by a professional: Find a repair shop in your area

Information for Specific Honda Models

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 P0463 Honda Code

1. What are the common symptoms of OBDII code P0463 in a Honda vehicle?

The common symptoms of OBDII code P0463 in a Honda vehicle include inaccurate fuel gauge readings, fluctuating fuel gauge readings, and the fuel gauge showing a full tank even when fuel levels are low.

2. What can cause the OBDII code P0463 Fuel Level Sensor Circuit High Voltage in a Honda?

The OBDII code P0463 in a Honda is typically caused by a faulty fuel level sensor, a damaged wiring harness, or a poor electrical connection related to the fuel level sensor circuit.

3. How can I diagnose the OBDII code P0463 in my Honda?

Diagnosing the OBDII code P0463 in a Honda involves using a scan tool to read the code, visually inspecting the fuel level sensor and its wiring, testing the sensor's resistance, and checking for any loose or damaged connections.

4. Can a faulty fuel pump cause the OBDII code P0463 in a Honda?

While a faulty fuel pump can sometimes cause erratic fuel gauge readings, the OBDII code P0463 specifically points to issues with the fuel level sensor circuit and is not directly related to the fuel pump.

5. How can I repair the OBDII code P0463 Fuel Level Sensor Circuit High Voltage in my Honda?

To repair the OBDII code P0463 in a Honda, you may need to replace the faulty fuel level sensor, repair any damaged wiring or connectors, or reset the code after fixing the underlying issue with the fuel level sensor circuit.

6. Is it safe to continue driving with the OBDII code P0463 in my Honda?

While it may be safe to drive with the OBDII code P0463 in a Honda in the short term, it is not recommended to ignore the issue as it can lead to inaccurate fuel level readings and potential fuel management problems in the long run.

7. Can a DIY enthusiast fix the OBDII code P0463 in a Honda?

Depending on their skill level and access to tools, a DIY enthusiast may be able to fix the OBDII code P0463 in a Honda by following repair guides, consulting service manuals, and using diagnostic tools to identify and address the underlying issue.

8. How much does it typically cost to repair the OBDII code P0463 Fuel Level Sensor Circuit High Voltage in a Honda?

The cost of repairing the OBDII code P0463 in a Honda can vary depending on the specific issue, parts needed for replacement, labor costs, and whether the repair is done at a dealership or an independent mechanic. Generally, it can range from $100 to $500 or more.

9. Will resetting the OBDII code P0463 in my Honda make it go away permanently?

Resetting the OBDII code P0463 in a Honda may temporarily clear the code from the system, but if the underlying issue with the fuel level sensor circuit is not addressed, the code is likely to reappear once the problem resurfaces.

10. Can extreme weather conditions affect the OBDII code P0463 in a Honda?

Extreme weather conditions, such as extreme heat or cold, can potentially impact the performance of the fuel level sensor and the accuracy of fuel gauge readings, which may contribute to triggering the OBDII code P0463 in a Honda.

Discuss the causes and fixes for P0463 Honda OBDII Code

  • 2004 Honda odyssey with P0463 and P0131 could you help me with the locations of these sensors? i know the O2 sensor is the first one right?

  • The P0463 is for the "Fuel Level Sensor" and the sensor is inside the fuel tank. The P0131 code is for the Primary Oxygen Sensor. Here is an image of the sensor:

    Image

    Click here to enlarge image

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