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Home › Jeep › 2019 › Grand Cherokee Laredo, AWD, Automatic T/Case Control › Repair and Diagnosis › Engine Performance › System › 3.6L - DTCS B1810 To P0073 › DTC Troubleshooting › P0057-O2 Sensor 2/2 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.