AutoCodes – Honda – P0496 Honda

P0496 Honda Code - Evaporative Emission System High Purge Flow

Quick Answer

The evaporative emission (EVAP) control system limits fuel vapors from escaping into the atmosphere. Common causes include Faulty EVAP Canister Vent Valve, Faulty EVAP Canister Purge valve, Plugged EVAP canister condition. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0496 Honda indicates Evaporative Emission System High Purge Flow.
Common causes: Common causes include Faulty EVAP Canister Vent Valve, Faulty EVAP Canister Purge valve, Plugged EVAP canister condition.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 15,623

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 24, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0496 Honda Description

The evaporative emission (EVAP) control system limits fuel vapors from escaping into the atmosphere. Fuel tank vapors are allowed to move from the fuel tank, due to pressure in the tank, through the vapor pipe, into the EVAP canister. Carbon in the canister absorbs and stores the fuel vapors. Excess pressure is vented through the vent line and EVAP vent solenoid to the atmosphere. The EVAP canister stores the fuel vapors until the engine is able to use them. At an appropriate time, the PCM will command the EVAP purge valve open, allowing engine vacuum to be applied to the EVAP canister. With the EVAP vent valve open, fresh air will be drawn through the valve and vent line to the EVAP canister. Fresh air is drawn through the canister, pulling fuel vapors from the carbon. The air/fuel vapor mixture continues through the EVAP purge pipe and EVAP purge valve into the intake manifold to be consumed during normal combustion. The EVAP system requires the PCM be able to detect a leak as small as 0.040 inch in the EVAP system. The PCM uses several tests to determine if the EVAP system is leaking.

OBDII Code P0496 Honda - Evaporative Emission System High Purge Flow - AutoCodes.com — P0496 Honda Code - Evaporative Emission System High Purge Flow

What does this mean?

What are the Possible Causes of the DTC P0496 Honda?

Faulty EVAP Canister Vent Valve
Faulty EVAP Canister Purge valve
Plugged EVAP canister condition
Faulty EVAP Pressure Sensor
EVAP Canister Vent Valve harness is open or shorted
EVAP Canister Vent Valve circuit poor electrical connection

How to Fix the DTC P0496 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0496 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 P0496 Honda code?

Need more information on how to fix the P0496 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0496 Honda 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 P0496 Honda Code

1. What are common symptoms of OBDII code P0496 in a Honda related to the Evaporative Emission System High Purge Flow?

The common symptoms include the check engine light illuminating on the dashboard, decreased fuel efficiency, and potential gas odors.

2. What are the possible causes of OBDII code P0496 in a Honda?

The code P0496 in a Honda is typically caused by a faulty purge valve, damaged charcoal canister, loose gas cap, or a clogged EVAP system.

3. How can I diagnose the OBDII code P0496 in my Honda?

Diagnosing the code P0496 involves using an OBDII scanner to retrieve the specific fault code, checking for any visible signs of damage in the EVAP system components, and conducting a smoke test to detect leaks.

4. What repair steps can I take to fix OBDII code P0496 in my Honda?

Repairing the code P0496 involves inspecting and potentially replacing the purge valve, checking and replacing the charcoal canister if necessary, ensuring the gas cap is properly tightened, and clearing the fault codes.

5. Can I continue driving my Honda with OBDII code P0496 present?

While the vehicle may still be operable with the code P0496, it is recommended to address the issue promptly to prevent further damage to the EVAP system and ensure optimal fuel efficiency.

6. How much does it typically cost to repair OBDII code P0496 in a Honda?

The cost of repairing OBDII code P0496 in a Honda can vary depending on the specific component that needs to be replaced or repaired, but it can range from $100 to $500, including parts and labor.

7. Are there any preventive maintenance tips to avoid OBDII code P0496 in a Honda?

To prevent OBDII code P0496 in a Honda, it is advisable to regularly inspect and maintain the EVAP system components, ensure the gas cap is properly sealed after refueling, and address any check engine light issues promptly.

8. Can a DIY enthusiast fix OBDII code P0496 in a Honda?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address OBDII code P0496 in a Honda by following repair guides and using appropriate diagnostic equipment.

9. How long does it take to repair OBDII code P0496 in a Honda?

The repair time for OBDII code P0496 in a Honda can vary based on the specific issue and the expertise of the mechanic, but it typically takes between 1-2 hours to diagnose and address the problem.

10. Will resetting the check engine light resolve OBDII code P0496 in a Honda?

Simply resetting the check engine light without addressing the underlying issue causing OBDII code P0496 in a Honda will not solve the problem. It is essential to diagnose the root cause and perform the necessary repairs to clear the fault code permanently.