O2 sensor testing (fixed rich), low power, misfire (Mitsubishi Eclipse) <br />Fixed Rich O2 (Is the sensor lying?) <br />How to determine if your oxygen sensor is bad, or if you have an actual rich or lean condition. Trouble codes normally associated with this condition: P0171, P0174, P0172, P0175 plus O2 related codes. In our case a P0300 was the only code in memory. <br />There are multiple ways to identify a faulty O2 sensor, I show three different techniques in this video.
