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2017
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Grand Cherokee SRT
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Repair and Diagnosis
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Engine Performance
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System
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6.4L - DTCS P000B To P0198
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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 Powertrain Control Module (PCM) detects that the O2 Sensor 1/2 heater element input is below the minimum acceptable voltage.