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Jeep Error Code P0457

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Level:3/3 | Add Comment http://www.autocodes.com/p0457_jeep.html Forum Code Possible causes - Damaged, missing or loosely installed fuel filler cap p0456 jeep What does this mean? Tech notes Check for a loose, missing or damage p0457 ford fuel filler the cap. What does this mean? When is the code detected?EVAP control system has a very p0457 code large leak such as fuel filler cap fell off Possible symptoms- Engine Light ON (or Service Engine Soon Warning Light)- Possible a noticeable fuel odor caused by the release of fuel vapors- Fuel

P0457 Subaru

cap indicator lamp (FCIL) may be illuminated. P0457 Jeep Description This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.The vacuum cut valve p0457 dodge bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed. Need more help? Do you need more help with the P0457 Jeep code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code Ask a Question Find a Shop Related Information Help AutoCodes.com Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0457 Jeep code? Have you replaced any parts? Any information is appreciated. Thanks Please enable JavaScript to view the AutoCodes.com Powered by Disqus. AutoCodes.com Comments Powered by Disqus Repair Importance Level: 1 1=Low 2=Medium 3=High Repair Difficulty Level: 3 1=Easy 2=Moderate 3=Hard Au

Emission Control System (EVAP) Leak Detected What does that mean? This is a generic powertrain code, which means it covers all makes/models, 1996-newer. However, specific troubleshooting steps will vary depending on the vehicle. Diagnostic trouble code (DTC) P0457 relates to a vacuum p0456 jeep wrangler leak in the evaporative emission system used to prevent fuel vapor leaks into the atmosphere.

P0457 Chrysler

Codes P0456 and P0455 are similar codes that refer to the degree of vacuum leaks from smallest to largest. The correction is

P0456 Dodge

similar in all circumstances. This code doesn't cause driveability problems, but should be corrected as soon as possible. This code states that a vacuum leak is present that compromises the evaporative emission system operation. Automobiles require http://www.autocodes.com/p0457_jeep.html two types of controls over emissions -- passive and active. The active portion relates to the fuel ratio control and the catalytic converter's ability to convert carbon monoxide, oxides of nitrogen and hydrocarbons into harmless water and carbon dioxide. The passive relates to this P0457 code. Fuel vapor accounts for 20 percent of the harmful emissions through evaporation. To prevent these vapors from entering the atmosphere they are contained within the fuel system and https://www.obd-codes.com/p0457 re-enter the engine via the intake manifold. The evaporative emission system consists of the fuel tank, a vacuum hose to the charcoal canister for containing the fuel vapors, pressure sensor on the fuel tank, purge valve on the charcoal canister, vacuum hose to the filler neck shut off valve and vacuum hose from the charcoal canister purge valve to the intake manifold. 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. A major leak exists preventing the system from being drawn into a vacuum necessary to draw the fuel vapors into the engine to be burned. Symptoms The symptoms of a P0457 code will vary depending on the component or system causing the disruption in the fuel trim. Not all will be present simultaneously. Malfunction Indic

Display Alphanumerically Display by Location Display by Map Help Garage Garage All Garages Browse by Username Browse Recently Added Browse Recently Modified Browse Most Popular Advanced Search Help Auto EscrowAdvertise Store Community Links Members List User Tagging Statistics http://www.wranglerforum.com/f282/p0457-code-i-swear-my-gas-cap-is-on-148264.html Hash Tag Subscriptions Search Forums Show Threads Show Posts Tag Search Advanced Search Search Gallery Advanced Search Go to Page... Thread Tools View the Vendor Directory Please support our sponsors and let them know you heard about them on WranglerForum.com Click HereTo Join (FREE) 03-22-2012, 09:09 PM #1 jstone326 Jeeper Join Date: Mar 2011 Location: New York Posts: 752 P0457 code... i swear my gas cap is on! I p0456 jeep was replacing the gas tank skid the weekend before last and managed to break my fuel pump in the process. So I replaced the pump last week, and a couple days later I got a check engine light. So I went to auto zone to get them to do the scan (i just found out about turning the key to get the code) and found its P0457... My neighbor cleared the code with his scanner, and jeep error code the CEL stayed off for a couple days and then just came back on. I really really really don't want to drop the tank again, so before I do that, has anyone had this code? My gas cap is on more than a few clicks... Thanks! __________________ Drive it like you rented it, not like you stole it. Cus if you stole it, you'd be driving 5 mph below the speed limit and using your turn signals. 03-22-2012, 09:25 PM #2 Jma20a Jeeper Join Date: Apr 2007 Location: Fairfield, CT Posts: 3,046 Just because its tight doesnt mean its fully sealed. New gas cap should fix it __________________ Dear Algebra, Please stop asking us to find your X. She's never coming back and don't ask Y. 03-22-2012, 09:28 PM #3 Coastiejeep Jeeper Join Date: Aug 2011 Location: Gulfport Posts: 248 Like JMA said just a new one, they are pressurized and making you check engine light come on. Ask me how I know... 03-22-2012, 09:33 PM #4 jstone326 Jeeper Join Date: Mar 2011 Location: New York Posts: 752 So you think its just a complete coincidence that it started right after I dropped my gas tank, replaced the fuel tank and in the process disconnected the fuel line and filler hose? __________________ Drive it like yo

 

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