2002 Jeep Liberty: OBD code P0455 Detected?

Its a ECM scan Error code.Gets detected when vehicles computer is scanned.The code stored in vehicles computer.

As per details

The P0455  defines  "EVAP System Large Leak Detected" - very commonly, this can be a loose, missing or faulty Fuel Cap.
In some cases even putting fuel into the tank while the engine is running can set this code.
Sp first  make sure the cap is tight. Check the underside of the cap for any visible damage. If there are any doubts, replace the fuel cap. If the cap is known to be good, another common fail item associated with this code is the EVAP Purge Solenoid. Carefully inspect the vacuum lines to the solenoid for any cracks, holes, or loose/missing connections. The solenoid should also be tested for proper operation. If the solenoid checks ok, the best way to find a "leak" in the EVAP system, is to have the system "smoked". This is where a machine forces smoke throught the system, and the leak will reveal itself. Prices for this service vary from shop to shop, but it is the most efficient way, as chasing down a leak in the EVAP system can be very time consuming sometimes.

See the help diagram shown below:----




This details will help you .
Thanks.

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What is EVAP Leak problem on car?

If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

The details are as follows :-----

The EVAP control system includes the fuel tank, fuel filler neck, gas cap, charcoal cannister, evap diagnostic solenoid, purge solenoid, all of the connnecting hoses/lines, ECM and related wiring. Anything that contains fuel that may evaporate (EVAP).
Does the vehicle have a P code for some EVAP problem, like large or small leak, or vent path blocked? Do you have a problem filling the fuel tank or is the Check Engine/ MIL lamp illuminated? If there is a larg or small leak the best way to identify where the leak is located is to use a smoke machine which creates smoke and introduces it into the system and you look for the leak.You will need to close the evaproative diagnostic solenoid using a scan tool or a jumper harness.

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This will help.Thanks.

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