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P064f OBD Error Code: Problem & Solutions

OBD Code P064F - Unauthorized Software/Calibration Detected

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Do you know what OBD code P064F signify? When an unauthorized software or calibration is detected, OBD P064F code may be set in your engine. This is a common type of diagnostic trouble code, which appears in vehicles whereas there are a few exceptions. Some of the repair steps for each vehicle will vary depending on the model and make of the vehicle, the year it was the manufactured and powertrain configuration. Even in some cases, if the engine control module (ECM) its own self-test, then the P064F code may be set.

Learn More About OBD Error Code P064F

Programming generally refers to the frequent installation of factory software and calibration of on-board controllers. In many circumstances, programming is performed before the vehicle reaches the owner, whereas on-board controllers continue to adapt to particular situation and efficiently learn in order to meet the requirements of each drivers and geographic location. Software or calibration failure may be due to voltage spikes, more temperatures, and more moisture. When you install aftermarket software programs, P064F code will be stored temporarily. Once the code is cleared and PCM learns the software, code will not be reset.


What causes this problem with the Unauthorized Software/Calibration Detected?


  • Error in the PCM programming.
  • PCM or either the controller is damaged.
  • Installing a high-performance software or aftermarket.

Replace/Repair These Parts To Fix OBD Code P064F

  1. PCM - A damaged or faulty powertrain control module can make your system misbehave. Replace / repair this component as needed.
  2. DVOM - DVOM is generally used to note down the voltage in this device. If the device is damaged or broken, you may not be able to get accurate reading. So, fix them as desired.

Symptoms Of OBD Error Code P064F

Willing to know some common symptoms of OBD Code P064F? Your wish is our demand. Have a look at them below:


Common Symptoms


  • The engine may not start up or there may be a delay in starting the engine.
  • Drivability issues in the engine.
  • Other error codes that are stored in the system.

How To Correct P064F Unauthorized Software/Calibration Detected

Here are some ways with the help of which you will be able to correct the OBD Code P064F.


  • Replacement of the faulty PCM.
  • Replacement of the scanner tool.
  • Replacing the damaged or faulty DVOM.


There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade PCM, Scanner, DVOM and a lot more for our precious customers.

Easy Diagnosis Of Engine Error OBD Code P064F

If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:


  • It is a very challenging task even for a well experienced and equipped technician if he has to diagnose a P064F code. If you don’t have access to a reprogramming equipment, then it will be impossible to accurately diagnose this error code.
  • You can also use the information source of your vehicle in order to obtain the technical service bulletins (TSB). This is mainly used to check if there are any replication of codes stored, the year of manufacture, model and make of your vehicle, the type of engine used, and any other symptoms that are exhibited. If you are able to find an exact TSB, then it might be helpful for you to gather the needed diagnostic information.
  • Initially, you have to start by connecting the scanner to the diagnostic port of the vehicle. Recover every of the codes that are stored and freeze every of the frame data. It is a good practice to not down the information as it may be helpful if the codes appeared to be inconsistent.
  • Once every of your relevant information is recorded, now you can clear the codes and test drive the vehicle if it is required until the code is reversed or till the PCM enters the readiness mode.
  • If the PCM has entered the readiness mode, it the code will be inconsistent and it will be even more difficult to diagnose the error code. So, in order to diagnose the error code accurately, the condition which caused the P064F code to be stored in your vehicle must be made to worsen. On the other hand, if the code fails to reverse and if there is no drivability symptoms shown in your vehicle, then the vehicle can be managed as usually.
  • You can also test control the ground integrity by connecting the negative part of DVOM to the ground and positive is connected to the battery voltage.


Common Mistakes When Diagnosing The P064F Code


  • When an aftermarket programmer is added to the vehicle.
  • The powertrain control module has failed or damaged.
  • Powertrain control module needs software updates.
  • Issues with wires.