AIR INJECTION - filed diagnostic test said, mass air flow circut+ air temp.sensor circut
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2000 Toyota Echo
Question: my check engine light is on ,has been for a while, now my car failed smog test
Answer #1Greg's Orange Auto (8341 Answers) , Orange, CA - (714) 361-9355globalhelper February 07, 2013, 06:50Master
you need to have circuits tested to start with and if good test sensors.are they unpluged or have corrision on them
Replycsubak30, February 07, 2013, 07:43Master
Agree with #1....you can clean the MAF sensor yourself.