One problem related to o2 sensor has been reported for the 2001 Toyota Corolla. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Toyota Corolla based on all problems reported for the 2001 Corolla.
I purchased a used vehicle from keyes Toyota one year ago. It was advertised certified, however when I bought the car they would not honor it. I have been back and forth to the dealership with repairs. Recently the check engine light came on and I spent over $700 replacing the 02 sensors and flushing my brakes. This did not fix the problem and I have to spend another $4-$500 replacing the air flow meter. The mechanic told me that these problem should not be happening to such a young car.