Here is what I have learned through some research, trial and error. It is about 3 ft. While not car-threatening, it's good to take care of this right away to improve gas mileage. On Monday the Check Engine Light went on. Even a small crack is a leak. Turns out the P0456 code was from an L shaped piece of rubber tubing which is about 4 inches long, but a 90 degree bend on a metal line on the vent line from the gas tank, just forward of the gas tank.
A loose gas cap or bad cap seal will generate a P0456 code. You need to check your ignition wire on 3, your spark plug on 3 and if need be, replace it or try to replace the others too and lastly if the trouble code is still there then you might replace the coil pack as well. Well it's been about 3-4- years now and still no call about the part. I checked the gas cap and it looks like it is sealing well. So anyway, after the light didn't go away after I checked the gas cap and filled the gas tank, I checked the code. I think a minor leak is P0445? They made the hose molded into a tight U shape and replacing this with a longer hose will fix the issue. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.
I believe P0456 is a vacuum leak major. Looked at the hoses going into the cannister under the car those look ok and in pretty good condition with no visible cracks. I bought it used in 2001. Now don't ask yourself; What should you do with P0456 code? Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. P0522 Engine oil pressure sensor low voltage. Should I take it to a shop to have this serviced sooner rather than later? Best Regards, Stan I have this code as well - same vehicle, same year. Because there is a small leak it may be the only way to find it, then repair the leak.
Can you tell me what these codes mean? The first code could be related to a loose, defective, or missing gas cap. Nancy answered 6 years ago I forgot to mention I have a remote start key fob. All you need to do is take the old one off and screw on the new one. If all check out good most likly cause is you evap leak detection pump haas fail. I would start by takinig a close look at all the rubber lines coming from the tank to the motor for cracks.
Turns out the P0456 code was from an L shaped piece of rubber tubing which is about 4 inches long, but a 90 degree bend on a metal line on the vent line from the gas tank, just forward of the gas tank. I have looked everywhere on this site and can't find out how to do it, thats why I add on to a post. I found thru the internet that Chrysler had issued repair instructions to dealers and they also said it was not necessary for the dealers to hear the noise at startup. I also have the P0442 and P0445 codes along with a P030 which says my 3 cylinder misses sometimes. It's always something if it's not another, my little Roseanne Roseannadana!? Although I have been pretty diligent to make sure that when ever I put gas in the car that I make sure the cap is on tight. When the check engine light comes Dodge Grand+Caravan P0456 code on the first you should check is the gas cap. Nancy answered 4 years ago I took my van back to the dealer.
Same issue on a 2007 sxt , looked at the gas cap , looks ok. It shouldn't hurt anything to keep driving it for a while until you can get it fixed. The gas cap may have a pin hole also. If it's not something common, the technician will have to duplicate the condition in order to diagnose -- check for spark, fuel pressure and fuel injector pulse while the engine won't start. Anyway, all you have to do is with the car off, turn the ignition switch off and on 3 times.
Remove both of the transmission lines from the cooler? Do you think all of this could be related to the noise I'm hearing when it starts? Connecting a scanner is a sure fire code getter. When you get the code come back here and post it in a new thread. The van will run just fine. It won't look as pretty but it will save the headache of ordering the factory replacement and doing it over every few years. If your spark plugs look good, problems with your ignition system can also preventing a spark.
A state mandate says they can't check them at all. . He also said those were back ordered an he would call when it came in. These conditions may include starting the vehicle when it is cold, driving the vehicle at a steady speed: cruising , accelerating, etc. I had that van for about 4 years and the sound only got worse.
I also have jerky shifting of the transmission sometimes not always. What a pain they are. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. It was cracked on the top and didn't even show from the bottom, it had to be removed to find the crack. Vehicle manufacturers set these procedures. I now have a Chevy Traverse and I love it. Now I checked this before and didn't see a crack in it, but he took it off and on top was an age crack that was causing the vacuum leak.