P0456 on chrysler 300

Pull the negative cable off the battery for 30 minutes will reset keep alive memory. Question? Why do you want/need to do this? I only do this for bad emission problems. But the problems have to be fixed first.

p0456 was likely the gas cap, evaporative emission alert.

p1273
Either the exhaust is leaking or management needs reset.

'Clear the Self Learning Data' procedure. Anytime fuel component is replace, this procedure needs to be done. (exhaust emissions as well)

1. Unplug MAF sensor
2. Start car for about 3 seconds. Turn off car. confirm P0102 code
3. re-connect MAF sensor. Clear code. START car.
4. Run car for 10 mins.

The sensor that is most likely causeing the problem is the low oil pressure sensor. It is telling the cpu that you have a problem that unless you correct it, the motor will suffer serious damage from insufficient lubrication.Have the oil pressure checked with a manual gauge then replace the sensor unit if faulty.

I think you ansered your own ?
if you have auto zone parts house you could take it there and have a charging system check done free of charge
some outher parts stores offer the same

have your battery checked my dodge truck does the same thing.

That code usually means your gas cap is not tight enough or if it is the seal on the cap is bad and not sealing tight enough. You can fix the problem by replacing the cap with a new OEM one from the Dealer. Aftermarket caps are not recommended. Sometimes once you have a new cap installed the code will go away by itself. You will need a OBD II scanner to erase the code, you can go to AutoZone and they can read and erase the code for you.

P1521 =Manf control veh spd, idle control, auxillary inputs

P0456=Emission control system eak, very small


???Good Luck

you have to tighten them some more.
look the only way they come off is if there to loose.
or someone is messing with you and your car.
man on this one i have to say watch your car at night one time.

I have a 2005 Chrysler 300. The engine light comes on from time to time -- sometimes it will stay on for a week or so and then go off for at most a day or two. I had the code read yesterday and the feedback was "EGR pressure flow is low." My car has about 65K miles. Is this a typical problem with this car? I was told replacing the EGR valve would fix the problem. How easy is it to replace an EGR valve on this vehicle? Once replaced, do I need to reset the computer --- if so how do I do this? If it is easy to fix, could you please provide step by step directions and show me location of the part in question that needs replaced?