P279A OBD Error Code: Problem & Solutions

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The trouble code P279A can be described as Transfer Case Gear High Incorrect Ratio. The error code P279A would start triggering when the transfer case control module would detect some fault in transfer case. One thing which you must keep in mind that its symptoms as well as causes would surely vary as it depends upon a number of things.

This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another. This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code. The P279A trouble code would indicate that a transfer case which is not as per the predetermined limit has been detected by the transfer case control module. Now when this would occur, the fault code would be stored and there would be an illumination of the malfunction indicator light.

What causes this problem with the Transfer Case Gear High Incorrect Ratio?

• Defaults in the transponder key electronic control unit
• Transponder key electronic control unit harness is open or shorted
• Transponder key electronic control unit circuit poor electrical connection

1. Engine Control Module - Is your car engine light still staying ON after resetting or your car engine is turning off for no reason? Then these are some common symptoms indicating that your car engine control module is defective.
2. Automatic Transmission Module - Sometimes the transmission module is unable to communicate or correctly anticipate the speed of the vehicle and thus creates difficulty in gear shift leading to sluggish acceleration, throttle response and stalling. Thus can also hamper a lot of components physically and thus must be checked and replaced, if required.
3. Powertrain Control Module - The PCM works as the central computer system in an automobile’s mechanism. This auto part is in charge of all the constituents as well as the functions performed by them. Having such enormous importance in the operation of all the parts means that any defect in it will affect almost every aspect of a car.
4. Electronic Control Unit - The ECU is a major component of your car's onboard computer. It's used to regulate many systems and subsystems in your car's engine, drive train and other major components. Visit us to buy best quality ECU online.
5. Diagnostic Tools - Take the help of a professional mechanic to diagnose OBD code error. Use high grade diagnostic tools to resolve this issue. Buy new tools and equipment form us!

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P279A code by mentioning some major symptoms below:

Common Symptoms

• Illumination in the service engine soon light
• 4-wheel drive system might be deactivated

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P279A:

• It is essential to restore the flawed transponder key electronic control unit circuit
• Recondition the non-functioning transponder key electronic control unit harness
• Adjust the flawed transponder key electronic control unit

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Here are some steps which you should follow in order to diagnose this fault code:

• Use an OBD-II scanner in order to verify that the code is present, and check for other codes for any other type of error or problem that might need attention.
• The current data along with freeze frame data are recorded, and the codes are then cleared to see if they reoccur.
• The vehicle is inspected for any problems with the wiring and connectors to check for loose connections, corrosion, or shorts.
• The tests related to the transfer case gear and components may help pinpoint the problem, as well as inspection of the current sensor and cut off switch will further helping the cause.
• The P279A error is triggered if there is a physical problem with the transfer case gear which could cause the engine performance to go off.

Common Mistakes When Diagnosing The P279A Code

• There can be a failure in the transfer case control module
• Some issues related to the wiring
• There might be transfer case internal failure