What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0031O2 Sensor 1/1 Heater Circuit LowManufacturer communications
7Original wording in English
DODGE
Reported code forms P0031
Flash: Diagnostic And System Improvements This bulletin involves diagnosis and selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software or if necessary replacing the PCM based on the…
DODGE
Reported code forms P0031
Malfunction Indicator Lamp Illumination Due To Oxygen Sensor This bulletin involves the installation of an Oxygen (O2) Sensor Overlay Harness for any Oxygen Sensor related DTC(s). The Overlay Harness will consist of…
DODGE
Reported code forms P0031
Malfunction Indicator Lamp Illumination Due To Oxygen Sensor inspecting for the part number of the transmission harness and based on the part number suffix, determining if the Oxygen Sensor Module Connector requires…
DODGE
Reported code forms P0031
Malfunction Indicator Lamp Illumination Due To Oxygen Sensor inspecting for the part number of the transmission harness and based on the part number suffix, determining if the Oxygen Sensor Module Connector requires…
DODGE
Reported code forms P0031
Malfunction Indicator Lamp Illumination Due To Oxygen Sensor inspecting for the part number of the transmission harness and based on the part number suffix, determining if the Oxygen Sensor Module Connector requires…
DODGE
Reported code forms P0031
Malfunction Indicator Lamp Illumination Due To Oxygen Sensor This bulletin involves replacement of the Oxygen Sensor Connectors for any Oxygen Sensor related DTC. Do NOT replace any parts prior to performing this…
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.