1992 Buick Skylark O2 Sensor Code 44

2002 BUICK SKYLARK
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HEYZEUS
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  • 2 POSTS
i checked the diagnostic trouble codes for my check engine light and was given a 44
lean exhaust/ 02 sensor voltage low.
does anyone know if this means i need to replace the 02 sensor, and if so where is it?
Dec 8, 2006 at 2:47 AM
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BACKYARDMECHANIC
  • ✓Experienced Mechanic
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Need more info. How many miles on car? If high mileage I would suspect you need to change the sensor. It should be located in the exhaust system engine pipe before the cat or sometimes located in the exhaust manifold. Good Luck :)
Dec 8, 2006 at 7:58 AM
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HEYZEUS
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its 288000 miles
but...i found the sensor and replaced it. thanks!
Dec 11, 2006 at 10:14 PM

Suggested Repair

On a high-mileage 1992 Buick Skylark, code 44 (lean exhaust / low O2 sensor voltage) often points to a worn oxygen sensor. Replace the sensor in the exhaust pipe before the catalytic converter, or in the exhaust manifold if that is where it is mounted.

Conversation Summary

The owner of a 1992 Buick Skylark 3.3 with 288,000 miles had check-engine code 44 for lean exhaust and low O2 sensor voltage, and asked whether the sensor needed replacement and where it was. The expert said high mileage made a failed sensor likely and described its location before the catalytic converter or in the manifold. The owner then found and replaced the sensor.

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