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2004 Jeep 3.7L with engine code P0038, do I need 2 Oxygen Sensors?

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2004 Jeep 3.7L with engine code P0038, do I need 2 Oxygen Sensors?

Vehicle: 2004 Jeep 3.7L

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You probably need only the rear sensor.

P0038 JEEP - O2 Sensor 1/2 Heater Circuit High

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