Resistance Test (Wrangler)
Disconnect O2 sensor connector. Connect ohmmeter test leads to connector terminals "A" and "B" of sensor connector. Resistance should be 5-7 ohms. Replace sensor if ohmmeter displays an infinity reading.
Disconnect O2 sensor connector. Connect ohmmeter test leads to connector terminals "A" and "B" of sensor connector. Resistance should be 5-7 ohms. Replace sensor if ohmmeter displays an infinity reading.