just got a call from the boy, he has a 02 grand cherokee and said the
engine light came on.. i emailed him the turn on turn off the key for
the code thing and this is what he said came up. forgive me if i
misunderstood any of it. po 455-evaporative emission control system
leak. do you think this is a big deal and can he do anything to get the
light out, should the warranty cover this kind of thing. once again
sorry if im off on this deal. thanks john jr

 

gas cap is loose... retighten it

 

gas cap is loose... retighten it

 

gas cap is loose... retighten it

 

gas cap is loose... retighten it

 

Error code 0455:
A large leak has been detected in the evaporative

system. See TSB 25-001-02. Also, possible faulty or

loose gas cap. Note: The respective Powertrain

Diagnostic Procedures Manual will direct the technician

to determine if the vehicle evaporative system has an

external system leak. Examples of some external

system leaks are: a loose gas cap, a disconnected

evaporative system hose, or a loose hose connection.

Remember that the evaporative system may also have

an internal system leak. This internal leak may be

caused by an intermittent or permanently stuck open

Duty Cycle Purge (DCP) valve. This leak source is

considered to be internal because any escaping

emissions enter into the engine system and not directly

into the atmosphere, unlike an external leak. An internal

leak may cause one of the above DTC?s. Possible

causes of a stuck open (intermittent or permanent) DCP

valve are: 1. Corrosion due to system moisture or

possible water intrusion into the system.






"john" <jeeptj@crtelco.com> wrote in message
news:11eg6cimbljpa84@corp.supernews.com...
> just got a call from the boy, he has a 02 grand cherokee and said the
> engine light came on.. i emailed him the turn on turn off the key for the
> code thing and this is what he said came up. forgive me if i misunderstood
> any of it. po 455-evaporative emission control system leak. do you think
> this is a big deal and can he do anything to get the light out, should the
> warranty cover this kind of thing. once again sorry if im off on this
> deal. thanks john jr
>

 

Error code 0455:
A large leak has been detected in the evaporative

system. See TSB 25-001-02. Also, possible faulty or

loose gas cap. Note: The respective Powertrain

Diagnostic Procedures Manual will direct the technician

to determine if the vehicle evaporative system has an

external system leak. Examples of some external

system leaks are: a loose gas cap, a disconnected

evaporative system hose, or a loose hose connection.

Remember that the evaporative system may also have

an internal system leak. This internal leak may be

caused by an intermittent or permanently stuck open

Duty Cycle Purge (DCP) valve. This leak source is

considered to be internal because any escaping

emissions enter into the engine system and not directly

into the atmosphere, unlike an external leak. An internal

leak may cause one of the above DTC?s. Possible

causes of a stuck open (intermittent or permanent) DCP

valve are: 1. Corrosion due to system moisture or

possible water intrusion into the system.






"john" <jeeptj@crtelco.com> wrote in message
news:11eg6cimbljpa84@corp.supernews.com...
> just got a call from the boy, he has a 02 grand cherokee and said the
> engine light came on.. i emailed him the turn on turn off the key for the
> code thing and this is what he said came up. forgive me if i misunderstood
> any of it. po 455-evaporative emission control system leak. do you think
> this is a big deal and can he do anything to get the light out, should the
> warranty cover this kind of thing. once again sorry if im off on this
> deal. thanks john jr
>

 

Error code 0455:
A large leak has been detected in the evaporative

system. See TSB 25-001-02. Also, possible faulty or

loose gas cap. Note: The respective Powertrain

Diagnostic Procedures Manual will direct the technician

to determine if the vehicle evaporative system has an

external system leak. Examples of some external

system leaks are: a loose gas cap, a disconnected

evaporative system hose, or a loose hose connection.

Remember that the evaporative system may also have

an internal system leak. This internal leak may be

caused by an intermittent or permanently stuck open

Duty Cycle Purge (DCP) valve. This leak source is

considered to be internal because any escaping

emissions enter into the engine system and not directly

into the atmosphere, unlike an external leak. An internal

leak may cause one of the above DTC?s. Possible

causes of a stuck open (intermittent or permanent) DCP

valve are: 1. Corrosion due to system moisture or

possible water intrusion into the system.






"john" <jeeptj@crtelco.com> wrote in message
news:11eg6cimbljpa84@corp.supernews.com...
> just got a call from the boy, he has a 02 grand cherokee and said the
> engine light came on.. i emailed him the turn on turn off the key for the
> code thing and this is what he said came up. forgive me if i misunderstood
> any of it. po 455-evaporative emission control system leak. do you think
> this is a big deal and can he do anything to get the light out, should the
> warranty cover this kind of thing. once again sorry if im off on this
> deal. thanks john jr
>

 

Error code 0455:
A large leak has been detected in the evaporative

system. See TSB 25-001-02. Also, possible faulty or

loose gas cap. Note: The respective Powertrain

Diagnostic Procedures Manual will direct the technician

to determine if the vehicle evaporative system has an

external system leak. Examples of some external

system leaks are: a loose gas cap, a disconnected

evaporative system hose, or a loose hose connection.

Remember that the evaporative system may also have

an internal system leak. This internal leak may be

caused by an intermittent or permanently stuck open

Duty Cycle Purge (DCP) valve. This leak source is

considered to be internal because any escaping

emissions enter into the engine system and not directly

into the atmosphere, unlike an external leak. An internal

leak may cause one of the above DTC?s. Possible

causes of a stuck open (intermittent or permanent) DCP

valve are: 1. Corrosion due to system moisture or

possible water intrusion into the system.






"john" <jeeptj@crtelco.com> wrote in message
news:11eg6cimbljpa84@corp.supernews.com...
> just got a call from the boy, he has a 02 grand cherokee and said the
> engine light came on.. i emailed him the turn on turn off the key for the
> code thing and this is what he said came up. forgive me if i misunderstood
> any of it. po 455-evaporative emission control system leak. do you think
> this is a big deal and can he do anything to get the light out, should the
> warranty cover this kind of thing. once again sorry if im off on this
> deal. thanks john jr
>

 

P0455 _most_ often means the gas cap is not secured.





"john" <jeeptj@crtelco.com> wrote in message
news:11eg6cimbljpa84@corp.supernews.com...
> just got a call from the boy, he has a 02 grand cherokee and said the
> engine light came on.. i emailed him the turn on turn off the key for the
> code thing and this is what he said came up. forgive me if i misunderstood
> any of it. po 455-evaporative emission control system leak. do you think
> this is a big deal and can he do anything to get the light out, should the
> warranty cover this kind of thing. once again sorry if im off on this
> deal. thanks john jr
>