FixVault

Home › Jeep › 2021 › Grand Cherokee L Laredo, AWD › Repair and Diagnosis › Engine Performance › System › 3.6L - DTCS P0037 To P0152 › Diagnosis And Testing › 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.