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Wausau/Weston

Weston

6205 Schofield Ave.
Weston, WI 54476
Ph: 715-355-4050
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Shawano

Shawano

1229 E Green Bay St
Shawano, WI 54166
Ph: 715-524-8266
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Stevens Point

Stevens Point East

5382 U.S. 10
Stevens Point, WI 54482
Ph: 715-341-1600
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Stevens Point South

3145 Church St.
Stevens Point, WI 54481
Ph: 715-341-1576
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Stevens Point Express

3147 Church St.
Stevens Point, WI 54481
Ph: 715-341-1576
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Green Bay

Green Bay East

2128 Main St.
Green Bay, WI 54302
Ph: 920-465-3790
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Green Bay West

2045 S Oneida St.
Green Bay, WI 54304
Ph: 920-494-4936
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Appleton

Appleton East

3333 Express Ct.
Appleton, WI 54915
Ph: 920-993-3339
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Appleton Express

1302 N Richmond St.
Appleton, WI 54911
Ph: 920-734-0555
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Appleton North

424 W. Northland Ave.
Appleton, WI 54911
Ph: 920-364-9540
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Neenah

Neenah

114 South Green Bay Rd.
Neenah, WI 54956
Ph: 920-722-2466
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Tuesday 17 December 2019

EVAP System - Top 5 Reasons for a Check Engine Light to Come On

Posted by at 12:15 PM

EVAP System - Top 5 Reasons for a Check Engine Light to Come On

The oil and fuel in your vehicle give off vapors that are very harmful to the environment. Evaporative emissions control systems – EVAP for short – are mandated in all cars and trucks. The EVAP system is there to capture these vapors and direct them into the engine to be burned – kind of an on-board recycling program.

The EVAP system is a complicated network of hoses, valves, filters and such. Issues with the EVAP system are in the top 5 reasons for a Check Engine light to be illuminated. Your friendly and knowledgeable Auto Select service advisor can pull the trouble codes and begin a diagnostic procedure to isolate the fault.

With the proper equipment, your technician can test the valves in order to trace a blockage. A low pressure smoke test can be performed to find any leaks. The repairs are then made to get the EVAP system working again and to reset the Check Engine light.

While EVAP problems don't generally lead to vehicle damage, the fact that they trigger the Check Engine light can mask other more serious problems if left unaddressed. After all, there are hundreds of conditions that can trigger a Check Engine light, but there is only one light. So if the light is on because of an EVAP issue you haven't fixed and another arises, you won't be alerted to the new condition because the light is already on.

Of course, if you live in a jurisdiction in WI that requires emissions testing to register your vehicle, you won't pass the test until you make the repairs. An EVAP trouble code could be caused by something as simple as a loose or worn gas cap, a leak in a hose, problems with a purge valve or even a rusty fuel filler pipe.

When your Check Engine light comes on, bring your vehicle into Auto Select and let us check it out. We will be able to diagnose the system and work out a plan to address any problems that are uncovered. That's peace of mind for our clients!