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P0031

Heated oxygen sensor (HO2S) 1, bank 1, heater control - circuit low

P0031 is described as “Heated oxygen sensor (HO2S) 1, bank 1, heater control - circuit low” in the Generic OBD2 reference. Other reference families are shown below; select the scope relevant to your vehicle.

Manufacturer reference family

BMW: P0031

en

HO2S Heater Control Circuit Low

Reference namespace
bmw
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: BMW.

10 profiles assigned this reference family
Manufacturer reference family

Continental Synerject Easy U: P0031

en

HO2S Heater Control Circuit Low Bank 1 Sensor 1

Reference namespace
continental-synerject-easy-u
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Manufacturer reference family

delphimt05: P0031

en

O2A Heater Circuit High Voltage

ru

Короткое замыкание на «массу» цепи подогрева датчика кислорода цилиндра № 1

Reference namespace
delphimt05
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Manufacturer reference family

Genesis / Hyundai / Kia: P0031

ru

Цепь управления нагревательным элементом датчика кислорода (ряд 1/датчик 1), низкое напряжение

Reference namespace
hyundai-kia
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Kia, Genesis, Hyundai.

401 profiles assigned this reference family

377 more related profiles are listed in the vehicle directory.

Manufacturer reference family

ISUZU: P0031

en

Oxygen sensor heater circuit low - Bank 1, Sensor 1

Reference namespace
isuzu
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: ISUZU.

1 profiles assigned this reference family
Manufacturer reference family

Datsun / Lada: P0031

ru

Нагреватель датчика кислорода до нейтрализатора, замыкание цепи управления на массу

Reference namespace
lada
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Lada, Datsun.

23 profiles assigned this reference family
Manufacturer reference family

Dodge / Mitsubishi: P0031

en

HO2S Heater Control Circuit Low (Bank 1 Sensor 1); Oxygen sensor heater(front) low

Reference namespace
mitsubishi
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Mitsubishi, Dodge.

31 profiles assigned this reference family

7 more related profiles are listed in the vehicle directory.

Manufacturer reference family

Infiniti / Nissan: P0031

en

HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

Reference namespace
nissan
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Nissan, Infiniti.

62 profiles assigned this reference family

38 more related profiles are listed in the vehicle directory.

Generic OBD2

Generic OBD2: P0031

en

Heated oxygen sensor (HO2S) 1, bank 1, heater control - circuit low

Reference namespace
obd2
Source revision
legacy-2.2.20

Generic OBD2 definition; confirm the protocol and vehicle-specific service information.

Manufacturer reference family

Belgee / Geely / Proton: P0031

en

HO2S Heater Control Circuit Low (Bank 1 Sensor 1); Front oxygen sensor heater short circuit to ground

Reference namespace
proton
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Belgee, Geely, Proton.

5 profiles assigned this reference family
Manufacturer reference family

GAC / Lexus / Toyota: P0031

en

Oxygen Sensor Heater Circuit Low Input (Bank 1, Sensor 1)

Reference namespace
toyota
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: GAC, Toyota, Lexus.

24 profiles assigned this reference family
Manufacturer reference family

УАЗ: P0031

ru

Обрыв или замыкание на «массу» цепи нагревателя датчика кислорода 1

Reference namespace
uaz
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: УАЗ.

4 profiles assigned this reference family
Manufacturer reference family

Audi / Jetta / MAN / Seat / Skoda / Volkswagen: P0031

de

HO2S Heater Circuit Low Voltage Bank 1 Sensor 1

en

HO2S Heater Circuit Low Voltage Bank 1 Sensor 1

Reference namespace
vag
Source revision
legacy-oem-dtc-r2-20260924

Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.

Related catalog brands: Skoda, Volkswagen, Audi, Seat, MAN, Jetta.

56 profiles assigned this reference family

32 more related profiles are listed in the vehicle directory.

What should I check before using this definition?

Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.

Organize a scan report or recording
Source and applicability

OBD Lens production library legacy-owner-2026-10-09-v81. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.

Read the reference method

OBD Lens reference library · catalog legacy-owner-2026-10-09-v81. Sources and scope