EVAP SYSTEM LEAK Problem

[tua200CA]

I've been getting P0442, P0442P and P0456P on my 2005 Camry 4cylinder standard since about December 2011. For some odd reason, lately P0456P stopped when scanning when the CEL comes on again after erasing the code.

There's no symptoms of any problem so I think it's likely to be some small leak in the evap. Looking at my gas cap, it's a little dirty, but I don't see any cracks or damage, and I always make sure to fasten it on tight.

Should I still buy a new gas cap as a 1st step of troubleshooting.

I have emission test coming up soon. Will my car pass the test after I erase the codes and take it in for test? Any advice?

(Actually this happened for 1st time like about 4 years ago when the car was under warranty. The dealer simply said that I didn't fasten on the fuel cap right, and erased the codes and sent me home. After about 4 years, same codes now that the warranty has expired....)

[Donald E. George]

You might look at ToyotaPartsEast.com illustrations to see if the cap gasket is sold seperately.Regards

[chuckoff]

Might pass test after you erase codes if you drive it enough to have all the readiness moniters reset. I would buy a new cap from the dealer, cheap enough to try. If you are getting P0446, you may need a carbon cannister. EVAP codes can hard to pinpoint.

[JohnGD]

Double check your emissions warranty. If it's PZEV at least in states like Calif you should have the 15-year/150K mile warranty.

Originally Posted by tua200CA

I've been getting P0442, P0442P and P0456P on my 2005 Camry 4cylinder standard since about December 2011. For some odd reason, lately P0456P stopped when scanning when the CEL comes on again after erasing the code.

There's no symptoms of any problem so I think it's likely to be some small leak in the evap. Looking at my gas cap, it's a little dirty, but I don't see any cracks or damage, and I always make sure to fasten it on tight.

Should I still buy a new gas cap as a 1st step of troubleshooting.

I have emission test coming up soon. Will my car pass the test after I erase the codes and take it in for test? Any advice?

(Actually this happened for 1st time like about 4 years ago when the car was under warranty. The dealer simply said that I didn't fasten on the fuel cap right, and erased the codes and sent me home. After about 4 years, same codes now that the warranty has expired....)