PowertrainP0036
CautionSeverity: Caution - get it checked when you can
HO2S Heater Control Circuit (Bank 1 Sensor 2)
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · Bank 1: the side of the engine containing cylinder 1 · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This code is in the fuel and air metering range, which includes fuel-pressure and camshaft-timing faults.
2Common causes
- Dirty or faulty mass air flow sensor
- Vacuum or intake air leak
- Weak fuel pump or clogged fuel filter
- Faulty fuel injector
- Faulty oxygen sensor
- Wiring or connector fault
3Can I drive?
Have it diagnosed promptly. Some codes in this range affect fuel pressure or camshaft timing; if the engine loses power, runs badly, or stalls, stop safely and get professional help.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 38
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0036 | Idle Speed Deviation Error Brand | Powertrain |
| BAIC Motor | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Mercedes-Benz | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| BMW | P0036 | Open circuit Brand | Powertrain |
| BYD | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Chery | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Daewoo | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Daihatsu | P0036 | Oxygen sensor heater circuit open Brand | Powertrain |
| DFFS | P0036 | Downstream oxygen sensor heating control Brand | Powertrain |
| DFFX | P0036 | Rear oxygen sensor heater open circuit Brand | Powertrain |
| DFXK | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| EOBD | P0036 | HO2S ogrevalno vezje, banka 1, senzor 2 Brand | Powertrain |
| Geely | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| GM | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Great Wall | P0036 | Downstream O2 Sensor Heater Fault Brand | Powertrain |
| Hafei | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Holden | P0036 | HO2S Heater Control Circuit Sensor 2 Brand | Powertrain |
| Honda | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Hyundai | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Isuzu | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Land Rover | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Maserati | P0036 | Oxygen sensor heater circuit (bank 1 sensor 2) Brand | Powertrain |
| Mitsubishi | P0036 | Oxygen sensor heater Brand | Powertrain |
| Nissan | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Opel | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Perodua | P0036 | Oxygen sensor heater circuit open Brand | Powertrain |
| Peugeot | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Porsche | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Proton | P0036 | Oxygen sensor heater Brand | Powertrain |
| Saab | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| MG (SAIC) | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Smart | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Sprinter | P0036 | HO2S Heater Control Circuit (Bank 1 Sensor 2) SAE | Powertrain |
| Suzuki | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| SWM Motor | P0036 | Downstream oxygen sensor heating control circuit is open Brand | Powertrain |
| Tata | P0036 | HO2S Heater Control Circuit Bank 1 Sensor 2 Brand | Powertrain |
| Toyota | P0036 | Downstream oxygen sensor heater circuit open Brand | Powertrain |
| Volkswagen | P0036 | Oxygen (Lambda) Sensor B1 S2: Heating Circuit: Malfunction / Open Circuit Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 1
These 7-character codes are manufacturer-specific variants of P0036 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P003600 | HO2S heater control circuit (bank 1 / sensor 2) Brand | Powertrain |
6Related codes
Browse Pxxx codes or P003xx codes.