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.
Oxygen (O2) Sensor Heating Element
- Disconnect O2 sensor heating element connector from harness connector. Connect voltmeter between harness connector terminals No. 1 and 2. See Fig 1
.
- Turn ignition on. Voltmeter should indicate battery voltage. If voltmeter does not indicate battery voltage, repair open circuit.
- Connect ohmmeter between O2 sensor heating element terminals No. 1 and 2. See Fig 2
. Ohmmeter should indicate 3-15 ohms. If ohmmeter does not indicate 3-15 ohms, replace O2 sensor.
Courtesy of AUDI OF AMERICA, INC.
Courtesy of AUDI OF AMERICA, INC.