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Jeep
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2023
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Grand Cherokee 4xe
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Repair and Diagnosis
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Engine Performance
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System
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2.0L - DTCS P0004 To P0087
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DTC Troubleshooting
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P0038-O2 Sensor 1/2 Heater Circuit High
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Set Condition
Set Condition
When the Powertrain Control Module (PCM) detects that the O2 Sensor 1/2 Heater circuit resistance is above approximately 35.0 Ohms.