LEMON Manuals
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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 P000A To P0037
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DTC Troubleshooting
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P0031-O2 Sensor 1/1 Heater Circuit Low
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Set Condition
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Set Condition
The Powertrain Control Module (PCM) detects that the O2 Sensor heater circuit resistance is below approximately 2.0 Ohms.