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P0036 Mercedes-Benz Code - HO2S Heater Control Circuit Bank 1 Sensor 2

- Code Popularity: 10,467 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0036 Mercedes-Benz?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
  • Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
  • Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P0036 Mercedes-Benz?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

Mercedes Benz Code = 0427 (Right O2 sensor, after TWC): Open circuit (P0036)

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0036 Mercedes-Benz code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P0036 Mercedes-Benz Description

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the required temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
This fault code is stored in the engine control module when the control circuit for the exhaust gas oxygen sensor heater circuit does not perform as expected. The engine control module can calculate the current flow through the heater circuit to monitor the circuit condition.

OBDII Code P0036 Mercedes-Benz - HO2S Heater Control Circuit Bank 1 Sensor 2 - AutoCodes.com
P0036 Mercedes-Benz Code - HO2S Heater Control Circuit Bank 1 Sensor 2

Need More Information on the Code?

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