Error code P0456
#1
#2
p0456
Evaporative Emission Control System Leak Detected (very small leak)
SIMPLE
this is an evap system code- often called -loose gas cap- As starting with gas cap is first suggestion....be sure its tight, and the seal is good..
I would ck that ....fill tank operate hopefully cap was issue and repeated drive cycles will clear code....
If dosn't clear:
no other codes.... then let us know the -the EELD - evap emiss leak detector (smoke machne) is next step BUT is vehicle operated on steep grades? there is a TSB FOR a problem with PCM
Evaporative Emission Control System Leak Detected (very small leak)
SIMPLE
this is an evap system code- often called -loose gas cap- As starting with gas cap is first suggestion....be sure its tight, and the seal is good..
I would ck that ....fill tank operate hopefully cap was issue and repeated drive cycles will clear code....
If dosn't clear:
no other codes.... then let us know the -the EELD - evap emiss leak detector (smoke machne) is next step BUT is vehicle operated on steep grades? there is a TSB FOR a problem with PCM
Last edited by kev2; 08-28-2009 at 05:30 PM.
#3
#5
Most common causes of trouble code P0456
http://www.ricksfreeautorepairadvice...ysler-vehicles
How to test a leak detection pump
http://www.ricksfreeautorepairadvice...edit&post=2122
How the whole EVAP system works on a Chrysler vehicle
http://www.ricksfreeautorepairadvice...=edit&post=544
http://www.ricksfreeautorepairadvice...ysler-vehicles
How to test a leak detection pump
http://www.ricksfreeautorepairadvice...edit&post=2122
How the whole EVAP system works on a Chrysler vehicle
http://www.ricksfreeautorepairadvice...=edit&post=544
#7
456, 441, 442, 440...had all of these and i switched out the gas cap to realize it wasnt the prob. then changed the evap hoses under the truck...fixed two codes. the other two went away after i replaced the evap hoses in the engine. Ive been code free for about two months and hoping to keep it that way...ive got emissions this year.
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#8
I know this is an old post but I fixed my small evap leak. My engine light came on last week and came up the code P0456 on my '03 Grand Caravan. Checked the obvious locations connectors, hoses near air filter. Found that my pcv valve was loose and tightened it and cleared the codes again. After a very short drive down the street the check engine light came on again. Traced all evap hoses to the vapor canister under the van and pulled off one 3/8 hose off the canister only to find out that the hose split near the connector. Bought a regular 3/8 fuel hose and cut it to length and put new clamps on and slightly tightened them up. I then cleared the codes again and drove the car about 2 miles and no problems with the check engine light. Hooked up OBDII to recheck for any codes and found nothing. Seems to be all okay now. Very simple to fix even a monkey can do it.
Here is what the vapor canister on a GC looks like. It's located on the driver's side under the car. It's big and you can't miss it!!!
http://www.rockauto.com/catalog/moreinfo.php?pk=932968
Here is what the vapor canister on a GC looks like. It's located on the driver's side under the car. It's big and you can't miss it!!!
http://www.rockauto.com/catalog/moreinfo.php?pk=932968
#9
Error Code: P0456 Fault:
Evaporative Emission (EVAP) System - Small Leak Detected
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Fuel Cap not fully attached.
Evaporative Emission (EVAP) System leaking/faulty.
Evaporative emission (EVAP) pressure sensor.
Possible Solutions:
Check Fuel Cap.
Check Evaporative Emission (EVAP) System.
Evaporative Emission (EVAP) System - Small Leak Detected
Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Fuel Cap not fully attached.
Evaporative Emission (EVAP) System leaking/faulty.
Evaporative emission (EVAP) pressure sensor.
Possible Solutions:
Check Fuel Cap.
Check Evaporative Emission (EVAP) System.