FixVault

Home › Jeep › 2017 › Cherokee Trailhawk, 3.2L Eng VIN S › Repair and Diagnosis › Engine Performance › System › 3.2L - DTCS B104D To P0123 › DTC Troubleshooting › P0031-O2 Sensor 1/1 Heater Circuit Low › Set Condition

Set Condition

The Powertrain Control Module (PCM) detects that the O2 Sensor heater circuit resistance is below approximately 2.0 Ohms.