The check engine light came on my Mazda. Codes were P0102 and P0031. What are those codes? Mechanic replaced 02 sensor (believe it was the front 02 sensor). Does my car have more than one 02 sensor? Mechanic said Mass Airflow Sensor (MAF) is next if check engine light comes on again. Car is a Mazda Protege ES 5spd with 105k.
Thanks!
Thanks!