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What is evaporative emission vent control?

The evaporative emission control (EVAP) system prevents fuel vapors from escaping into the atmosphere. The vent control valve is controlled by the engine control module (ECM) and allows air to flow into the charcoal canister to purge the gas vapors into the engine air intake to be burned.

What is a EVAP vent control valve?

The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP vent control valve (solenoid), or vent valve, is a part of the EVAP system. It controls the flow of outside air in and out of the charcoal canister. In some cars, it’s called Canister Close Valve (CCV).

What does the evaporative emission system vent control circuit do?

The vent valve, which allows fresh air to enter the charcoal canister, is usually open. But when your car’s computer wants to check the EVAP system for leaks, it commands the electronically controlled vent valve to close, thereby sealing everything off. Then, the system can perform its self-test.

How do you fix an evaporative emission control system?

If you see a P0442 evaporative emission system leak detected code, you may be able to resolve the problem without much effort. The easiest solution may be to remove and reaffix the gas cap. Once you do, clear the code on the OBD-II diagnostic scanner and drive for a few days.

How much does it cost to get a purge valve replaced?

To have your canister purge valve replaced, you will pay anywhere between $110 and $170. The parts are the expensive component here, as they will run between $75 and $110. The labor, on the other hand, usually only costs about $50, meaning this is a rather quick and straightforward procedure.

How much does it cost to repair an EVAP system?

According to, the average cost to repair an EVAP system that failed the EVAP test is $250. A diagnostic smoke test, according to British Columbia-based Jericho Electronics, costs $89.99 at some shops. The price does not include repair.

What is the function of evaporative emission canister?

What is the function of Evaporative Emission Canister. The evaporative emission (EVAP) canister is a storage device for fuel vapors that are emitted by the fuel tank in hot soak conditions. When the vehicle is at normal operating conditions, the vapors are purged from the canister. The EVAP canister is controlled by the evaporative emission (EVAP) canister purge valve.

How does the evaporative emissions system work?

The evaporative emission (EVAP) control system limits the fuel vapors from escaping into the atmosphere. The EVAP transfers the fuel vapors from the sealed fuel tank to an activated carbon storage device, the EVAP canister. The EVAP canister stores the vapors until the engine is able to use the extra fuel vapor.

Where is the EVAP emission canister?

The EVAP emissions control canister is located on the driver side, near the rear tires . Jack up the vehicle from the recommended jack placement and place the rear of the vehicle on jack stands for support. Make sure to keep pressure on the jack after lowering the vehicle onto the jack stands for extra safety.