The P0456 is a generic code stating that the Engine Control Module (ECM) detected a small leak from the evaporative system. This leak was detected during a self-test. For the code to come on, the test must fail two times in a row before the Check Engine Light comes on. Theevaporative...
I have an '03 Dodge Grand Caravan with the 3.3 V6 and 92K on the odometer. I am the original owner and have done nothing but routine oil changes and maintainence since buying it new. I just had the Check Engine Light come on for the first time ever so I took it to a local Autozo...
What this code means is that the computer has tested the evap system and was not able to draw a vacuum on the fuel tank. it does this by turning on the evap vent valve which closes the fuel tank vent off, It then opens the vacuum solenoid and allows engine vacuum to be drawn on th...