Camry Check Engine Light/"Evap System"?

My '99 Camry (60K mi) keeps showing a "check engine" light.

Two weeks ago, my mechanic replaced the oxygen sensor.

Came back on two days ago, with the computer code P0446, "Evap system", which my mechanic can't fix. He says it's fine to drive but that it should be taken care of---something to do with emitting gas vapor, and the vent system?

Can anyone explain this in plain english? How important is this? Finally: I'm afraid I paid $$ for the oxygen sensor when perhaps this was the problem that triggered the engine light? Are the two related, and did I get fleeced?

Thanks for any insights!

Reply to
Setchell
Loading thread data ...

What was the code on the first engine check light? Looks like there was a TSB on this (tech service bulletin) Look here for the number...p0446

formatting link

Reply to
ROBMURR

Ensure the gas cap is on securely and that the gasket is in good shape. Double check also to ensure the hose of the VSV valve on the air filter is seating properly on the air filter housing as it tends to be disturbed during the verification/maintenance of the air filter. Technically, when the engine is off, fuel vapors from the fuel tank and air cleaner housing are routed through hoses to the EVAP canister which is filled with activated charcoal to absorb and store fuel vapors. When the engine is running and warmed to a pre-set temperature, a valve (TVV or VSV) opens allowing intake vacuum manifold to draw the fuel vapors from the canister to the intake manifold where they are mixed with the intake air before being burned with the air/fuel mixture inside the combustion chambers. Hope this helps.

should

I
Reply to
Jean-Guy Paradis

Hi,

I had the similar experience with my 00 Camry, although the sequence of events was in a reversed order. The light came on for the first time two weeks ago. The mechanic at my dealership pulled code #0446 and replaced the VSV valve. They charged my $200+ for this ($90 for retrieving the code alone!). One week later, the light came up again. Again sent it to my dealer. This time they pulled code #1130 (O2 sensor malfunctioning). They would like $360 (or $800 if they can't remove the sensor from the manifold). I felt they were over-charging me and said no. After reading tips on replacing an o2 sensor, I decided to do it myself. I just got a new universal sensor for $70 (bosch 15734), a sensor socket for $10, and a can of penetrating catalyst for $5.0. Hopefully, I can fix this problem myself with as little as $85 (instead of the bloody $360)!

My question is: do these two parts usually go wrong at the same time?

Reply to
snowman

Hi,

I had the similar experience with my 00 Camry, although the sequence of events was in a reversed order. The light came on for the first time two weeks ago. The mechanic at my dealership pulled code #0446 and replaced the VSV valve. They charged my $200+ for this ($90 for retrieving the code alone!). One week later, the light came up again. Again sent it to my dealer. This time they pulled code #1130 (O2 sensor malfunctioning). They would like $360 (or $800 if they can't remove the sensor from the manifold). I felt they were over-charging me and said no. After reading tips on replacing an o2 sensor, I decided to do it myself. I just got a new universal sensor for $70 (bosch 15734), a sensor socket for $10, and a can of penetrating catalyst for $5.0. Hopefully, I can fix this problem myself with as little as $85 (instead of the bloody $360)!

My question is: do these two parts usually go wrong at the same time?

Reply to
snowman

As far as I know, these parts are not related. However, I would really appreciate you let us know how the job went once you got it done. Jean-Guy

Reply to
Jean-Guy Paradis

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.