Home >> Jeep >> 2024 >> Gladiator Nighthawk, Part Time T/Case Control, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> 3.6L (GPEC 5) - DTCS P0019 To P0052 >> DTC Troubleshooting >> P0031-O2 Sensor 1/1 Heater Circuit Low >> Default Action