October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

O2 Sensor

Temperature of O2 sensor must be below 572°F (300°C). Check on/off ratio displayed on tester. If reading is constant 50%, O2 sensor is good and test is complete. If reading is constant 92%, O2 sensor is shorted out and must be replaced.