Skip the auto shop - Our mechanics make house calls

Q: Can a purge solenoid cable cause a EVAP leak code?

asked by on

I have P0455, P0456,and P0457 codes but no cracked hoses and the smell of gas comes from right by valve.

My car has an automatic transmission.

Hi, thanks for your question. When the engine is off, the vent shutoff valve and canister purge valve are closed. The fuel can’t escape into the atmosphere. When the engine starts, the purge valve on the canister opens to allow the trapped fuel vapor to be drawn by engine vacuum into the intake manifold. At the same time, the vent shutoff valve also opens to allow a small amount of air to enter the canister and mix with the fuel vapor for a better mixture. Once vented and the pressure sensor in the tank shows a significant drop, both valves close sealing the system once again. When this solenoid cable does not supply proper continuity, this does not allow the venting of the system to happen as it should. This is what causes the EVAP leak codes.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose any issues for you, and make or suggest any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Error codes with vehicle

Hi. P0700 is a transmission control system fault and a p0750 is a fault regarding the shift solenoid. P0456 is code for a small leak detected in the evaporative emission system. For a quote on pricing please visit this site....

Q: 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...

Q: truck wont start

A single loud click typically means that you have a starter going bad which would require replacement. To verify it isn't the clutch safety switch you could just jump a paper clip (temporarily) across the two pins of the clutch...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...