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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, difficulty starting, and the Check Engine Light turning on.
Is it Safe to Drive With an EVAP Leak?
While it is safe to drive with an EVAP system leak, it causes excess car pollution. Fixing the problem is often as simple as tightening the gas cap.
P0458 OBD-II Trouble Code: Evaporative Emission System Purge Control Valve Circuit Low
Diagnostic Diagnostic Trouble Code (DTC): P0458 P0458 code definition The P0458 code means that a specific part of the EVAP system purge control valve circuit has caused a voltage reading that does not match the manufacturer’s specifications, and is therefore...
P0457 OBD-II Trouble Code: Evaporative Emission Control System Leak Detected
Diagnostic Diagnostic Trouble Code (DTC): P0457 P0457 code definition When the PCM (powertrain control module) detects a leak in the evaporative emission control system, the P0457 code will be stored and the Check Engine Light will be illuminated. What the...
P0451 OBD-II Trouble Code: Evaporative Emission Control System Pressure Sensor Range/Performance
Diagnostic Diagnostic Trouble Code (DTC): P0451 P0451 code definition When the PCM (powertrain control module) detects an incorrect, erratic, or otherwise improper voltage signal from the evaporative emission control system pressure sensor, a P0451 code is set and the Check...
P0450 OBD-II Trouble Code: Evaporative Emission Control System Pressure Sensor Malfunction
Diagnostic Diagnostic Trouble Code (DTC): P0450 P0450 code definition If a vehicle has stored a P0450 code, it means there has been a malfunction with the evaporative emission control system pressure sensor. What the P0450 code means The evaporative...
P0448 OBD-II Trouble Code: Evaporative Emission Control System Vent Control Circuit Shorted
P0448 code appears when the PCM detects that the circuit for the evaporative emission control system's vent has shorted or valve is stuck.
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.
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 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.
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.
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.

Related questions

Question
Code P0455 2004 Audi A4 2.0T
Hello - a P0455 indicates a large evaporative emissions leak. This problem code originates with the evaporative emissions system purge valve, which expects positive pressure flow from the evap emissions cannister - which captures fumes from the fuel tank primarily....
Question
Needs to pass smog check..
If the check engine light is only coming on when your on the freeway it might be a problem that the computer is only recognizing at cruising speeds. Your best bet would be to have a certified mechanic read the...
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
Evaporative Emissions Control
Your car has a small purge valve that controls the venting of fumes from the fuel tank as these fumes build up inside, particularly when you are refueling the car with gas. The EVAP system prevents fuel vapors from the...
Question
evap
Restriction in the EVAP vent or purge hoses can also cause this code. A restricted EVAP canister will also set P0446. A smoke test can find restricted canister. I suggest having a mechanic come out and diagnose your Check Engine...
Question
Engine light coming on
Hello. Code P0446 comes up due to a problem with the EVAP emissions vent system. This system collects evaporating fuel so that it does not get released into the atmosphere. The code almost always means that the vent valve has...
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
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
Gas odor
It sounds like the evap vent is clogged near the fuel tank. This will cause the excessive pressure build up of pressure and the canister vent can get blocked with debris. Have this system checked and repaired as needed. ...
Question
Does the car have to be driving down the road for the computer to sense a Fuel line EVAP leak?
In order for the EVAP system to complete the drive test you need to be at a cruise steady speed with engine warm and no check engine light on. The actual speed is needed will be in overdrive above 45...
Question
Hi my 07 charger failed smog , i had diagnostics done and i was told i need new evap canister and o2 sensor bank 2 sensor 2. Can y
Hello, thank you for writing in. To get an official quote, you will want to contact our service department. I can tell you that replacing the oxygen sensor can cost from $100-200. The evap canister can be more expensive, but...
Question
I have a bent EVAP line that's bent underneath the car, how do I know if it's leaking? Also if it's not leaking is it ok to drive?
The car's self diagnostics should be able to tell you if there is a leak in the line, The EVAP monitor will pull a vacuum on the tank and keep track of the fall in pressure. It will light the...
Question
Where is purge valve for evap canister 07 honda civic si
The purge valve is mounted on the engine and you will see hose connections from the valve to the intake manifold as well as a wire harness connection. The purge valve should be tested to determine if it is actually...
Question
I have a 2004 Mercedes Benz ML350.
Hi there. Check the brakes and the wheel speed sensors to see if the are damaged or worn causing the ESP light to come on. A worn brake pad can cause the ESP light to come on as the wheel...
Question
whining noise front of engine, EVAP and temperature control
Hello, thank you for writing in. The first two symptoms may be related. Finding a leak in the EVAP system will take some time and focus. If the noise goes away after fixing the leak, then we know we can...
Question
My car shows the check engine light, the computer showed code P0455, and it shakes and vibrates at stops and during acceleration.
First, remove and reinstall the gas cap, clear the code P0455, and drive the vehicle for a few days and see if the code comes back. If the code comes back on, then either the gas cap needs replaced...
Question
I have 2013 ford mustang and right now the check fuel check inlet just showed up what do I do now
The “check fuel fill inlet” warning light means that there is a problem with the fuel tank cap seal. The fuel cap could be missing, loose, damaged, screwed on too tightly and thus distorted, there is debris in the fuel...
Question
Check Engine Light on and off, reader gives P0446 error 1999 Toyota Corolla
Hello - the P0446 code is an indication that the evaporative emissions purge valve electrical circuit has had a loss of electrical power to the vent valve that allows fresh air to enter the evap cannister. This could be a...
Question
Can you tell me how to remove the charcoal canister in a 02 hyundai sonata 2.4l it needs the foam replaced
To remove the canister, perform the following: Remove the two bolts that hold the canister onto the car and drop it down. Then remove the bolts that secure the canister to the shield cover. Disconnect the wiring harness to...
Question
How do you test a used vapor canister?
Hi there. Take an air hose and with using low pressure, blow air into the tank pipe and see if the air comes out of the other pipes with no restrictions. Then with using low pressure, blow air into the...

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