This video shows how to replace an oxygen sensor on a Porsche Boxster. This car is displaying a check engine light with the codes P0154 and P1119. These codes generally mean that the oxygen sensor is toast. I have verified that the sensor is bad by using Durametric software to read actual values of the oxygen sensor while the car is running.
The replacement oxygen sensor was purchased from Pelican Parts. It is very important that you use a Bosche Original Equipment (OEM) o2 sensor, DO NOT — USE UNIVERSAL FIT OXYGEN SENSORS, your car will not run properly with a generic o2 sensor.
Tools needed to replace the oxygen sensor:
flat head screwdriver
jack, jack stand & lug wrench.