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EVAP (Evaporative Emission Control) system

Related articles

Symptoms of a Bad or Failing Canister Purge Solenoid
Common signs of a problem with a car EVAP canister purge solenoid include rough idle, difficult starting, and the Check Engine Light turning on.
Symptoms of a Bad or Failing Evaporative Emission Control Canister
Common signs include the Check Engine Light coming on, raw fuel smell coming from the back of the car, and a collapsed or leaking fuel tank.
What Does the Fuel Cap Warning Light Mean?
The fuel cap light tells you when a leak has been detected in your car, most likely from a loose gas cap.
How to Replace an Evaporative Emission Control Canister
Emissions are regulated by the EVAP emission control canister which fails when the fuel tank gauge does not work or you fail an emissions test.
How to Clean Evaporator Drain Tubes
The air conditioning system on a car has evaporator drain tubes than need cleaning if there is dirty air in the car or it is not blowing consistently.
How to Replace a Canister Purge Solenoid
The canister purge solenoid prevents harmful vapor from releasing into the atmosphere. A faulty solenoid will not allow you to pass an emissions test.

Related questions

Question
Fuel spills out when fueling, even if the tank is near empty. What's happening?
Hi There, What you are describing sounds like you may have a faulty purge solenoid in your EVAP system. Your car has a small purge valve called a purge solenoid that controls the venting of fumes from the fuel tank...
Question
Evaporative Emissions Control
If your problem is only related to not being able to put fuel in your tank, this may actually be related to your evaporative emissions system rather than the fuel tank itself. The EVAP system prevents fuel vapors from the...
Question
Car stalling
Hello There, Your car has a small purge valve called a purge solenoid in the Evaporative Emissions system that controls the venting of fumes from the fuel tank as these fumes build up inside, particularly when you are refueling the...
Question
Hunting idle speed and stalling.
Hi There, It sounds like you may have an issue with your evaporative emissions control system causing the hunting idle problem and the no start issue after filling up your fuel tank. Your car has a small purge valve called...
Question
I'm getting a check engine light with codes p0455 and p0456. I tried a new gas cap from the dealer but the light comes back in a few days.
Hi there - the 2 codes you mention are indicative of a leak in the evaporative emissions system. As you have been advised, this is sometimes caused by a loose gas cap, or one that no longer seals properly. It...
Question
White smoke coming from tailpipe with the code for evap large leak.
Hi there. The white smoke coming from the exhaust system indicates that there is water (coolant) in the exhaust system. This is caused by the coolant getting into the combustion chamber and burning off with the fuel. The coolant is...
Question
Can you drive 500 mile trip when you have a code p0456?
Hi there, yes, you are still able to drive your vehicle with a "small evaporative system leak". HOWEVER, please note that there might be a slightly higher risk of a fire in this scenario. This system manages fuel fumes, which...
Question
Gas cap code
The codes you are getting is not a gas cap code but a leak in the gas tank evaporative emission system that includes a possible leak in the gas cap. You will need to have the system leak checked with...
Question
Where is evap canister located on 2010 dodge journey
Hello, thank you for writing in. The EVAP canister on the Dodge Journeys is difficult to find. You will want to look next to the gas tank. From the outside of the vehicle, the best thing to do is locate...
Question
Car won't start after getting gas
The most common cause for this hard or no start after getting fuel is the purge valve is leaking fumes to the engine while fueling the vehicle. You should first have any computer codes checked by scanning the computer and...
Question
Check Engine Light On
Hello, thank you for writing in. There are several reasons the EVAP canister would develop a leak, but an accident is absolutely capable of causing it. Unfortunately the more compact a car gets, the more difficult some of these components...
Question
Why does my 4 wheel drive, tract light, and engine check light come on all at once?
Hello. The Toyota dealership may be correct because the codes that you have listed are related to the charcoal canister. However further testing should be done to verify that the canister is at fault. The charcoal canister is part of...
Question
EVAP canister
If you found that evaporative canister was not plugged in for some reason, then plug it in and then clear the codes. You can then drive the vehicle for a week or more to make sure the check engine light...
Question
I have a diagnostic trouble code P147d.
The code P147d is coming up for the fuel canister purge valve that could be sticking and not working properly. The purge valve is designed to control the emission's vapors in the fuel system. If the valve is not functioning...
Question
My Jeep is having EVAP Issues
Hello Melissa, thank you for writing in. We can absolutely help you replace the EVAP canister or other malfunctioning parts in the system. If there is a vacuum leak in the system, you will need to locate it. An EVAP...
Question
Broken wire right at connector to evaporative vent solenoid. Need t know where to find new connector to splice in.
Hi there. You could purchase an entire wiring harness and change out the pigtail or you could visit a salvage yard to find the pigtail that you are looking for. If you need further assistance with your electrical system, then...
Question
I have a problem with my 1985 Mercedes 280SE. I need your help to fix this problem. I can't start the engine from first time.
Hi there. The fuel system's evaporative purge valve could have a leak causing the fuel system to leak out the vapors. This will make the fuel system drop in pressure when the fuel pump is not working. I recommend seeking...
Question
Where is the leak detection pump on a 2010 challenger rt
The leak detection pump is part of your car's evaporative emissions control system. The pump assembly is attached to the vehicle's vapor canister. To replace it you have to remove the retaining bolts and the 2 wire electrical connector to...
Question
Where is the fuel vapor leak detection pump located
The leak detection pump, also known as the EVAP system integrity module (ESIM), is Mopar Part No. 4861962AB for your car. The ESIM is an emissions control device and is typically mounted on the vapor canister in the rear of...
Question
Check engine light is on. The gas cap is okay and the vent sensor by crankcase seems okay too. What could it be?
The issue could be the evaporative emission vent purge valve on the vapor charcoal canister. I recommend using a sniffer that is used for butane and check for a fuel leak around the vent purge valve and see if there...

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