Car is throwing a few codes P0455 and P0449

[DreamerGT]

This is on the Pontiac Grand Prix, I replaced the gas cap and reset it and the codes came back. Looks like they have to do with evap system and I have no clue where to start looking. thanks

 

[MolaKule]

Check the rubber hoses and connections to and from the EVAP cannister, engine, and fuel tank.

In some cases, the EVAP cannister can crack or get porous, resulting in EVAP code.

 

[beast3300]

Juice up the Vent Solenoid to see if it works. Use 12volts and see if the vent clicks. Most common repair for that platform with those codes is the Vent solenoid.

It is located by the filler neck.

 

[ltslimjim]

^BITOG resources ftw again.

 

[DreamerGT]

Originally Posted By: beast3300
Juice up the Vent Solenoid to see if it works. Use 12volts and see if the vent clicks. Most common repair for that platform with those codes is the Vent solenoid.

It is located by the filler neck.


Just wanted to say that was the problem, I got the new one in and no more codes. thanks a lot

 

[beast3300]

YW

 

[sleddriver]

Dang...I'm jealous! I've been chasing the dreaded P0455 in the sled for quite awhile. No joy. I even pressurized the gas tank, then pulled a suction on it. No joy there either.