Error Code P0064: What It Means & What To Do?

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Is your Check Engine Light On? Is the car experiencing loss of engine power? Is there black smoke coming from the exhaust pipe? If these are the problems you are facing, then there might be indicative of OBD Code P0064 error.

OBD-II Code Decreased engine performance is defined as a HO2S Heater Control Circuit High.

Indicates that there is an abnormally high voltage or resistance present in the heater control circuit of oxygen sensor (bank 2 sensor 3). The oxygen sensor measurements only become accurate when the sensor reaches a temperature of 600 degrees or above.

Oxygen sensor measures the oxygen content in the exhaust gases as they leave the combustion process of the engine. The oxygen sensor must attain a certain temperature for this information to be accurately read and transmitted to the Power Control Module (PCM) as increase in temperature increases the process speed. The PCM sends a voltage to the heater circuit of the oxygen sensor. The sensor turns most of that voltage into heat but also uses the voltage as a way to communicate the air-fuel ratio to the PCM. When the PCM detects that the heater wire is not operating, it sets OBD code P0064.

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

• Excessive carbon builds up on the oxygen sensor, restricting accurate measurement
• Heated Oxygen Sensor Bank 2 Sensor 3 faulty
• Damaged wiring and harness
• Open in the heater control circuit
• Faulty/damaged Mass Airflow Sensor (MAF)
• Vacuum or excessive exhaust leaks
• Corroded or damaged Connections
• Failure of Powertrain control module

1. Oxygen Sensor - Damaged oxygen sensor will not be able to collect the correct readings and send wrong information to the PCM. Thus, replace faulty sensors now!
2. Mass Air Flow Sensor - If the information sent to the PCM is wrong, it will affect the engine performance greatly. Buy new MAF sensor today!
3. Oxygen Sensor Connector - A faulty Oxygen Sensor Connector will affect the functioning of the oxygen sensor and thus needs to be replaced immediately.
4. Powertrain Control Module - PCM needs to interpret the information correctly so that the right air to fuel ratio can be achieved. Replace faulty PCM components immediately.
5. Diagnostic Tools - Use professional level tools to detect and correct the OBD code problems. Buy now!
6. Battery & Parts - There can also be issue with the car battery that can lead to engine problems. Replace faulty battery parts now!

The P0064 code will illuminate a Check Engine Light on the instrument panel/dash. The following symptoms can indicate the presence of OBD Code P0064 that is being flashed and stored in the PCM and can lead to the engine going into failsafe mode.

Common Symptoms

• Service engine light or Check Engine Light illumination
• Reduced Engine power and performance
• Lean or Rich Engine Condition
• Faulty Powertrain Control Module
• Black smoke from the Tailpipe
• Gas leakage smell from the Exhaust
• Increased Exhaust leaks
• Engine vacuum leaks

• Scan the computer system for OBD code errors stored in the PCM
• Check for vacuum leaks and holes in the exhaust system
• Replace faulty oxygen sensor
• Check electrical wiring and connections
• Clear diagnostic codes and test drive the car to see if the code reappears

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 P0064 error.

• Take the help of a qualified technician to use a scan tool and confirm whether P0064 is present.
• Find and freeze frame data with the code. Then, clear the code.
• Take the vehicle on a test drive under the same conditions.
• If the code reappears, perform a visual inspection of the bank 2 sensor 3 and its wiring.
• If the wiring is okay, the sensor itself will be tested to confirm operation.
• If the HO2S is functioning properly, the technician must check the Engine Control Unit for any faults and damages.
• If all the components are working properly, check for faults in the PCM and replace or reprogram according to the situation.

Common Mistakes When Diagnosing The P0064 Code

It is important to inspect all the components properly before directly jumping to the PCM or the sensor for the diagnosis. This way you can avoid the OBD error from reappearing as well as save on future costs as repairs of faults in the wirings are much cheaper that replacing a perfectly healthy sensor or PCM without knowing the main reason of the problem.

• Replacing the wrong oxygen sensor by misinterpreting the order
• Mass Air Flow sensor dirty and not inspected properly
• Not checking for leakages causing damages to the oxygen sensor. Thus, proper diagnosis is necessary in correct order to properly diagnose OBD code P0064 error.