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There are 2. upstream and downstream. they require a special tool(slotted socket that allows removal without breaking wire connection. Very easy though. just unscrew and remove, just dont break wire connection.

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16y ago
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9y ago

The oxygen sensors are screwed into the exhaust on either side of the catalytic converter.

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14y ago

follow the exhaust

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Q: How do you replace or check the o2 sensors on a 2002 grand Cherokee limited?
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