Oxygen Sensor Heating Element
Disconnect O2 sensor connector. Connect an ohmmeter between sensor terminals "A" and "B". Ohmmeter should read less than 10 ohms. Replace sensor if ohmmeter reads infinity.
Disconnect O2 sensor connector. Connect an ohmmeter between sensor terminals "A" and "B". Ohmmeter should read less than 10 ohms. Replace sensor if ohmmeter reads infinity.