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Jeep
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2020
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Compass Trailhawk
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Repair and Diagnosis
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Engine Performance
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System
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2.4L - DTCS P104D To P0140
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DTC Troubleshooting
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P0037-O2 Sensor 1/2 Heater Circuit Low
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Set Condition
Set Condition
The PCM detects that the O2 Sensor heater circuit resistance is below approximately 2.0 Ohms.