Originally Posted by jlw
Relpacing all (4) o2 sensors and the intake air valve o-ring, it is cheaper to go to the dealer.
Replace only one o2 sensor.
Its actually cheaper to buy an obdii scanner and the o2 sensor and replace it yourself than go to the stealer.
I just did mine and after a reset, my p-code is gone.
Your obd scanner will tell you which bank and sensor are giving you issues.
Nate