Conquering the (NNBS) P0449 Code

[Smokymance]

Just got my code this weekend on a trip!!!!!!!! 6.2L vehicle.. :-OOOO

 

[Goodinblack]

So I replaced my vent solenoid and the corresponding harness along with my gas cap. Engine code went away .....for about a week. Now it comes on sporadically and is currently lit.

I know the technical service bulletin says not to replace the solenoid valve but that's the last remaining part. Any one out there run into this or have their problem fixed by putting on the solenoid valve?

Updates?

 

[Smokymance]

Updates?

im in the same page on what to replace or not...getting cold here in MICHIGAN...and when you got a CEL my remote start dont work

 

[russellshireman]

A general rule of thumb my shop uses as well as the last shop i worked at to CYOA, was to replace the purge solenoid any time you replace the vent solenoid. They are both mechanical parts with rubber seals, and fuel vapors aren't nice to rubber.

 

[kingbilly68]

I'll be doing this as soon as the rain stops.

 

[Warriorpluto]

Where is this wire under the floor board and what color is it?

 

[swathdiver]

Where is this wire under the floor board and what color is it?

P0449 is for the purge valve which is on the motor and the pink and dark green/white wire run to the ECM under the hood.

 

[HiHoeSilver]

P0449 is for the purge valve which is on the motor and the pink and dark green/white wire run to the ECM under the hood.

I thought 449 was the circuit for the vent valve by the tank.

 

[wjburken]

I thought 449 was the circuit for the vent valve by the tank.

So did I.

 

[swathdiver]

I thought 449 was the circuit for the vent valve by the tank.

So did I.

You're right, I was wrong! Only took you a year to notice! LOL

As Ronaldus Magnus used to tell Gorbachev, "Doveryai, no proveryai"!