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Guide To P0062 OBD Error Code Solutions

OBD Code P0062 - HO2S Heater Control Circuit (Bank 2 Sensor 3)

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Is your car’s Check Engine Light On? Is the engine hesitant or stumbling? Are you experiencing increased fuel consumption and loss of acceleration? All these are the indicatives of OBD Code P0062 error flashing.


Trouble code P0062 indicates that the heater circuit used to warm up an oxygen sensor has malfunctioned. A voltage ranging from 12.0-13.5 and a ground connection is required to operate the oxygen sensor.

Learn More About OBD Error Code P0062

The oxygen sensor uses a heated circuit to warm up the sensor for faster feedback operation to the PCM. The oxygen sensor may have three or four wires according to different make and model, two are used for feedback to the Powertrain Control Module (PCM) / Engine Control Module (ECM) and the other wires for the heater to power the heated circuit.


The code is commonly due to the oxygen sensor not receiving the proper power or ground needed to successfully control the heater element inside of the oxygen sensor. An oxygen sensor has a small circuit within it which may lose the ability to produce heat. The oxygen sensor is part of, and is connected to a circuit that is used to heat the oxygen sensor.


For the oxygen sensor to work properly it has to reach a temperature around 600 degrees Fahrenheit. If the sensor does not reach such temperatures the air-fuel ratio readings will be incorrect. When the PCM detects the heater, wire is not working properly, it will set code P0062.


What causes the problem of HO2S Heater Control Circuit (Bank 2 Sensor 3)?


  • Oxygen sensor circuit open
  • Open power or ground wires to oxygen sensor
  • Electrical components of the oxygen sensor, such as the wiring or electrical terminals corroded
  • Heated Oxygen Sensor Bank 2 Sensor 3 and electrical connector faulty
  • Oxygen sensor blown fuse
  • Oxygen sensor internal heater element fault
  • Powertrain control Module (PCM) faulty
  • Black Smoke emitting from the tailpipe

Replace/Repair These Parts To Fix OBD Code P0062

  1. Heated Oxygen Sensor - A faulty sensor will not be able to perform properly and not analyse the air to fuel ratio in the exhaust. Replace damaged oxygen sensors now!
  2. Heated Oxygen Sensor Connector - A faulty Oxygen Sensor Connector can also lead to improper engine functions. Replace your old connectors now.
  3. Oxygen Sensor Fuse - Damaged Heater Circuit Fuse affects the fuel delivery as well as the exhaust systems. Visit us for quality fuses and parts.
  4. Diagnostic Tool - Use high grade diagnostic tools to solve OBD P0062 error. Visit us today to grab amazing deals.

Symptoms Of OBD Error Code P0062

Common Symptoms


  • Check Engine Light or Service Light On
  • Rich condition in the engine
  • Hesitant or stumbling engine
  • Increased fuel consumption
  • Loss of acceleration

How To Correct P0062 HO2S Heater Control Circuit (Bank 2 Sensor 3)

  • Use an OBD-II scanner to check for the presence of the error code
  • Check for the vacuum leaks and holes in the exhaust
  • Replace faulty oxygen sensor
  • Replace damaged wirings and sensor connectors
  • Examine Oxygen Sensor operation
  • Clear diagnostic tools and test the car for OBD error

At Parts Avatar Canada, find the best quality replacement and performance parts at the best price in the market to correctly diagnose the OBD Code P0062 error for all make and model.

Easy Diagnosis Of Engine Error OBD Code P0062

Always use professional OBD scan tools to verify the code and start the diagnosis process. An experienced technician should be appointed to do the diagnosis. Following are the steps to diagnose OBD Code P0062 error.


  • Inspect the power supply and ground of the oxygen sensor.
  • Use a professional scan tool to monitor feedback from the oxygen sensor.
  • Checks for increased temperature of the oxygen sensor when it is removed from the exhaust.
  • Unplug the oxygen sensor and use a digital voltmeter (DVOM) to test the resistance of the heater circuit using a wiring diagram for reference.
  • Some resistance should be present inside the heater circuit, and an excessive resistance or an over limit reading indicates an open in the heated portion of the circuit, indicating replacement of oxygen sensor.
  • Check for power to supply at the oxygen sensor by back-probing the power supply wire at the connector with the DVOM set to DC volts with the positive lead on the power supply wire and the negative lead at a good known ground.
  • Clear the codes and test drive the vehicle to ensure that the repair was successful and the OBD is not flashing back.
  • If all the components are fine, the PCM can be faulty and may require replacement or reprogramming.


Common Mistakes When Diagnosing The P0062 Code


  • Terminals of the oxygen sensor not cleaned
  • Oxygen sensor power and ground supply not checked before replacing the sensor
  • Misidentifying faulty oxygen sensors
  • Leaking oil or coolant damaging oxygen sensor
  • Not using vehicle make and model specific sensors

Other Diagnostic Codes Related To OBD Code P0062

P0063 - HO2S Heater Control Circuit Low (Bank 2 Sensor 3)

P0064 - HO2S Heater Control Circuit High (Bank 2 Sensor 3)