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Jeep
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2022
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Grand Cherokee Laredo, AWD
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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 P0072
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DTC Troubleshooting
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P0051-O2-Sensor 2/1 Heater Circuit Low
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When Monitored
When Monitored
Battery voltage between 10.5 and 15.75 volts.
The O2 Sensor Heater is commanded on.
The O2 Sensor Heater circuit high fault is not active.