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Home › Jeep › 2023 › Gladiator Freedom, Part Time T/Case Control › Repair and Diagnosis › Engine Performance › System › 3.6L (GPEC 5) - DTCS P0023 To P0113 › DTC Troubleshooting › P0051-O2-Sensor 2/1 Heater Circuit Low › 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.