Malibu, Malibu MAXX 2006-2008

Heated Oxygen Sensor

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2.2L (L61) Engine



The front Heated Oxygen Sensor (HO2S) is mounted in the exhaust manifold. The rear Heated Oxygen Sensor (HO2S) is mounted in the front exhaust pipe after the catalytic converter.

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Fig. Front (1) and rear (2) Heated Oxygen Sensor (HO2S) location

3.5L (LZ4) & 3.9L (LZ9) Engine



Front Sensors


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Fig. Front Heated Oxygen (HO2S) Sensors left side shown right similar

The front Heated Oxygen (HO2S) Sensors left and right are mounted in the exhaust manifold. Bank 1 sensor 1 is mounted in the right exhaust manifold and bank 2 sensor 2 in the left manifold.

Rear Sensors

The rear Heated Oxygen (HO2S) Sensors are mounted just behind the catalytic converters. Bank 1 sensor 2 is mounted behind right converter assembly and bank 2 sensor 2 behind left assembly.

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Fig. Rear Heated Oxygen (HO2S) Sensors

 
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