P0496 Code - Evaporative Emission System High Purge Flow

What Does P0496 Mean?

This indicates that a portion of the EVAP control system is no longer functioning properly. The EVAP system consists of components including (but not limited to) the gas cap, fuel lines, charcoal canister, purge valve, system pressure and flow sensors, electrical wiring and connectors, vacuum lines, the fuel tank, and fuel vapor hoses.

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What are the common causes of P0496 ?

There are a number of potential causes for the P0496 code to appear including the following:

• Faulty purge or vent solenoid/valve
• Plugged EVAP canister
• Failed EVAP/fuel pressure sensor
• Poor electrical connections
• Bad canister purge valve
• Faulty vent solenoid

In certain vehicles, other causes could be at play. In the Hyundai vehicles, the cause can be due to a leaking EVAP system holds, while in Kia and Mazda, it could be due to a faulty purge flow sensor.

How do you troubleshoot P0496 ?

Now, clear the codes and test-drive the vehicle to see if the code is reset. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Look at the plug wires to make sure they are not burnt or laying on the exhaust.



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