Century, Grand Prix, Impala, Intrigue, Lumina, Monte Carlo, Regal 2001-2005

Heated Oxygen Sensor

Print

The Heated Oxygen Sensor (HO2S) sensors are located on the exhaust manifold and on the exhaust pipe before the catalytic converter

Click image to see an enlarged view

Fig. Identifying HO2S1 sensor connector-3.1L, 3.4L, 3.5L, 3.8L (with NU3) and 3.9L engines



Click image to see an enlarged view

Fig. Identifying HO2S2 sensor connector-3.1L, 3.4L, 3.5L, 3.8L, 3.9L and 5.3L engines



Click image to see an enlarged view

Fig. Identifying HO2S1 sensor connector w/o NU3-3.8L engine



Click image to see an enlarged view

Fig. Identifying HO2S1 sensor connector-5.3L engine

 
label.common.footer.alt.autozoneLogo