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Can you tell me where the downstream oxygen sensor is located on a 2012 Ford Focus?
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★ Top Answer
The 2012 Ford Focus is equipped with an oxygen sensor (O2) positioned downstream of the evap system, which means it can be located after the catalytic converter. In comparison, the upstream sensor is situated before the converter. If the sensor malfunctions, you may notice signs such as the check engine light illuminating, decreased fuel efficiency, a foul odor reminiscent of rotten eggs coming from the exhaust pipe, and engine hesitation while driving. Replacing the sensor could cost you anywhere from $12 to $45 for the part alone. However, if you opt for professional installation, expect to add $50 to $180 for labor to the total cost.
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You can locate the downstream oxygen sensor near the catalytic converter in the exhaust system.
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