It could cause a failure. The line could be collapsing, causing no flow through it. This would cause a fail code.
no
It means you have an Evap purge control leak in the EVAP system. Basically when you have gasoline in a car there are a lot of excess fumes, these fumes are routed through the EVAP system of the car, through a charcoal canister, and returned back to your gas tank as liquid fuel. A leaking charcoal canister, Evap Purge solenoid, PCV lines or PCV elbows can cause this. Also a leaking gas cap can cause this. I would recommend replacing the gas cap first. if that does not do it, check all the connections to the EVAP canister *located in the engine by the firewall*. If there are any leaks, change the elbows or lines. IF the problem still exists you most likely need a new charcoal canister or Canister purge valve solenoid.
If you have a check engine light on, have the codes read. It may be as simple as replacing the fuel cap.
You can save some of it by: Close condenser valve to evap coil - Use guages to prevent exceeded max pressure. Run compressor to store gas in condenser. Cut off evap return line at compresser. Replace evap.
You have a small "EVAP" leak. Start with replacing the fuel cap.
Not likely.
P0442 is an Evaporative Emission Control System Leak (a small leak) ("EVAP") The sensor is indicating a fuel vapour (US spelling "vapor") in the EVAP system. It means a small leak has been detected. Apparently the leak can be a hole as small as 0.04" in diameter. The EVAP control system prevents the escape of fuel vapours from a vehicle's fuel system. Fuel vapours are routed by steel tubes and neoprene rubber hoses to a charcoal cannister for storage. Later a purge control valve opens allowing the fuel vapours to be sucked into the intake system of the engine. The problem is not likely to cause the engine to operate any differently. The most likely cause is a loose or poorly fitting gas cap. Other possible causes are: a non-conforming gas cap, a small leak or hole or crackin a fuel fuel vapour hose or tube, a small leak elsewhere in the EVAP sustem or a faulty vent o-ring seal, or a faulty sensor. The most common repair is to remove, inspect and reinstall the gas cap, clear the code and drive to see if the code reappears. Replace the gas cap. Inspect the EVAP system for cuts, holes, cracks in the tubes and hoses. A smoke test is helpfull in detecting non-visible holes. Patience is also helpful. Steel tubes can rust out as a result of salt and water exposure and neoprene rubber can become brittle with exposure the UV light and Ozone. Donald Partridge 2123 Prince Charles Road Ottawa, Ontario, Canada
a small evap leak would not cause your car to jerk.
Not sure what year it is but start with replacing the fuel cap and make sure the EVAP system is all there and operating.
Trouble code P0446 means: EVAP Vent System Performance
Could be as simple as a loose or bad fuel cap.
Evap pump