AutoCodes – Acura – P0496 Acura

P0496 Acura 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 Acura 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.

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Code Popularity 7,106

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

What does this mean?

What are the Possible Causes of the DTC P0496 Acura?

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 Acura?

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 Acura 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.

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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 P0496 Acura Code

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

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and potential gasoline odor near the vehicle.

2. What are the possible causes of the OBDII code P0496 in an Acura?

- The code P0496 in an Acura is often triggered by a faulty purge valve, a leak in the evaporative emission system, a malfunctioning charcoal canister, or a loose gas cap.

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

- Diagnosing the code P0496 involves using an OBDII scanner to retrieve the specific fault code, inspecting the purge valve, checking for leaks in the system, and ensuring the gas cap is properly sealed.

4. Can I continue driving my Acura with the OBDII code P0496 without immediate repair?

- It is generally not recommended to drive your Acura with the code P0496 without addressing the issue promptly, as it can lead to further damage to the emission system and potentially affect the vehicle's performance.

5. How can I repair the OBDII code P0496 in my Acura related to the Evaporative Emission System High Purge Flow?

- Repairing the code P0496 may involve replacing the purge valve, fixing any leaks in the system, replacing the charcoal canister if necessary, and ensuring the gas cap is tightened properly.

6. Will resetting the check engine light resolve the OBDII code P0496 in my Acura?

- Simply resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the code P0496. It is important to diagnose and repair the problem to prevent it from reoccurring.

7. How much does it typically cost to repair the OBDII code P0496 in an Acura?

- The cost of repairing the code P0496 can vary depending on the specific cause of the issue, but it may range from around $100 to $500, including parts and labor.

8. Can a DIY enthusiast repair the OBDII code P0496 in an Acura at home?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to repair the code P0496 at home by following repair guides and tutorials. However, professional diagnosis and repair are recommended for accurate and lasting solutions.

9. How long does it take to repair the OBDII code P0496 in an Acura?

- The repair time for the code P0496 can vary based on the specific cause of the issue and the extent of the repairs needed. In general, it may take anywhere from 1 to 3 hours at a repair shop.

10. Are there any preventive measures to avoid triggering the OBDII code P0496 in an Acura?

- To prevent triggering the code P0496, ensure you tighten the gas cap securely after refueling, perform regular maintenance checks on the emission system, and address any warning signs promptly to avoid potential issues.