Vented exhaust fumes dangerous? - Toyota Nation Forum : Toyota Car and Truck Forums

Ranger X · 10-01-2005, 11:26 AM

I have an emissions problem on my camry. Code P0446, which says there is a vent control malfunction with the EVAP system--could be a multitude of problems causing this code to come up, but long story short it vents exhaust vapors out of the gas cap instead of flitering them out. What I want to know is, can these fumes be dangerous? They're quite strong...not inside the car, but if I roll the windows down then it gets bad.

***RningOnFumes*** · 10-01-2005, 11:31 AM

not sure about the code...bad o2 sensor?

umm...exhaust fumes bad....don't want to get carbon monoxide poisoning.

Ranger X · 10-01-2005, 11:51 AM

Well, I know about CO poisoning. I was thinking more along the lines of combustion due to static electricity, or anything else. I do have a bad O2 sensor, but that's causing another code entirely to come up. According to the Haynes manual, P0446 is because of:

Open or Short in VSV circuit for EVAP
Problem with VSV for EVAP
Open or short in vapor pressure sensor circuit
Vapor pressure sensor circuit malfunction
Open or short in VSV circuit for vapor pressure circuit
Problem with vacuum hose (so it's not possible to recycle the vapors)
Charcoal canister malfunction

Could be any of those, maybe even a combination...regardless it's not something I want to mess with...I tried getting the darn canister off so I could check it, and I just gave up. Toyota couldn't have put it in a worse location.