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2011
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300 C, 4WD
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Repair and Diagnosis
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Section 1187 (5.7L - DTCS B1810 To P0175 - 1500)
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DTC Troubleshooting
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P0031-O2 Sensor 1/1 Heater Circuit Low
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Set Condition
Set Condition
WARNING:
This page is about a different car, the 2016 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
The O2 Sensor heater element input is below the minimum acceptable voltage.