Mike's Workshop Manuals
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Jeep
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2024
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Grand Cherokee Summit
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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 P0018 To P0052
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DTC Troubleshooting
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P0051-O2-Sensor 2/1 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.