P0036 – Heated oxygen sensor 2, bank 1, heater control -circuit malfunction

DTC P0036 is an OBD-II code that refers to a malfunction in the Heater Control Circuit of the oxygen sensor. It indicates that there is a problem with the electrical heating element of the oxygen sensor, which can affect its performance. The code typically relates to the Bank 1 Sensor 2 oxygen sensor, which is located after the catalytic converter.

Sensor 2, located after the catalytic converter(s), monitors the performance of the converter in cleaning up the exhaust gases, while Sensor 1 measures the oxygen content in the exhaust stream before it reaches the catalytic converter.

Fixes for OBD-II Code P0036

To fix the P0036 OBD-II code, you can take the following steps:

  1. Inspect the wiring and connections: Check the wiring harness and connectors associated with the oxygen sensor Heater Control Circuit. Look for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring or connectors.
  2. Test the oxygen sensor: Use a multimeter (read more) to measure the resistance of the oxygen sensor’s heating element. Compare the reading with the specifications provided by the manufacturer. If the resistance is out of range, replace the oxygen sensor.
  3. Check the fuses: Verify that the fuses related to the oxygen sensor heater circuit are intact. Replace any blown fuses if necessary.

Note: It is recommended to consult a qualified mechanic or refer to the specific repair manual for your vehicle to ensure proper diagnosis and repair procedures are followed.

Related DTCs to P0036

There are some codes that likely would have been shown along with the aforementioned code: P0030, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, P0161.


The cost to fix the P0036 code can vary depending on several factors such as the make and model of the vehicle, the location, and the specific cause of the issue. In general, the cost can range from $100 to $400 or more. These are rough estimates, and the actual cost can vary. It is recommended to consult with a trusted mechanic or service station to get an accurate prices specifically to your vehicle.

If the problem is related to a faulty oxygen sensor, the cost of a new sensor can range from $50 to $200, depending on the brand and quality. However, if the issue is with the wiring or connectors, the cost may be lower as it may only involve repair or replacement of those components.

If you are experiencing the P0036 code, it is generally not recommended to continue driving with it. Driving with a faulty oxygen sensor (DTC P0036 is a sign) can lead to decreased fuel efficiency, engine misfires, and potential damage to the catalytic converter.

While this code is not considered an immediate safety concern, it is still a serious issue that should be addressed.

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