nrodwal

P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

I'm fairly confident it's a fuse issue, as a lot of the ones I have on my 07 LS 2.2L (second owner) are bad. Which fuse/relay is the code calling for me to replace?

843de

Give the following thread a read, generic OBD II lookup sites are a good start, but there isn't much here that we haven't seen an HHR do in the last decade.

Click the link below...

https://www.chevyhhr.net/forums/prob...49-code-20547/

donbrew

More likely the vent is bad. About $28 20 minutes laying under the car.

fastsuv

Yup.

I did mine a few years ago. Doesn't even require any tools to change out, if I remember correctly. Actually pretty reasonably priced fromt he dealer. Mine had a crack in the plastic that caused the leak.

Steve

akquaman

I just replaced the valve, under the car near the left rear wheel. Code still on with engine light. Test it on Autozone- same message came back: Under hood fuse/relay box.
Any idea how to check the fuse and what position might be in? Thank you!

donbrew

What message says that?
The fuse for the VENT solenoid is #64 and the PURGE is #33 (there are other things attached to #33). You can look at the fuse and determine if the conductor is broken or, you can use a VOM to check for continuity with the fuse out or for voltage on both sides through the pin holes on the top of the fuse with the fuse installed.
https://www.youtube.com/results?sear...utomotive+fuse

Oldblue

Canister vent , fuse #64