One problem related to other fuel system tank pressure relief devices has been reported for the 2002 Toyota Corolla. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Toyota Corolla based on all problems reported for the 2002 Corolla.
Charcoal canister vacuum switching valve was gone bad and stuck in position 1. This happened to most of the Corolla. I have read on internet about Toyota fixing this problem to few of the customers as goodwill. I had to pay around $500 to get it fixed. If this was a known design flaw it has to be fixed by Toyota. My car hardly has 58,000 miles on it and I had done every bit of maintenance defined in the Corolla manual.