Mike's Workshop Manuals
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Dodge and Ram
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2024
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ProMaster 2500 Base
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Repair and Diagnosis
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Engine Performance
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System
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3.6L - DTCS P000C To P0031
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DTC Troubleshooting
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P0031 O2 Sensor 1/1 Heater Circuit Low
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Default Action
Default Action
The MIL will illuminate.
The PCM will disable the O2 Sensor Heater driver for the remainder of this ignition cycle.