FixVault

Home › Jeep › 2021 › Cherokee Trailhawk › Repair and Diagnosis › Engine Performance › System › 3.2L - DTCS B104D To P0072 › DTC Troubleshooting › P0052-O2-Sensor 2/1 Heater Circuit High › When Monitored

When Monitored

Battery voltage between 10.5 and 15.75 volts.
O2 Sensor Heater commanded on.
The O2 Sensor Heater circuit low fault is not active.