P0868 OBD Error Code: Problem & Solutions

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When will the fluid pressure of the transmission be low? How does this error code gets stored in the vehicle? This is a general type of error code which finds an issue in the transmission fluid pressure. The transmission fluid is generally used for greasing the transmission and it is used to cool the transmission system especially for vehicles with automatic transmission. If the level of the transmission fluid is either high or low, then the PCM will store the P0868 error code in the vehicle.

The fluid pressure that passes through the transmission is informed to the TCM by the transmission fluid pressure sensor. If there is an improper signal which is easily identified by the TCM, from the transmission pressure sensor, the TCM will send a signal to PCM which will further set an error code - P0868 in the vehicle.

What causes this problem with the Transmission Fluid Pressure Low?

• The fluid level in the transmission is not sufficient due to leakage.
• Transmission keeps slipping or malfunctions.
• Transmission high-pressure pump is defective.
• Malfunctioning of the transmission pressure sensor.
• The engine will overheat.
• PCM is broken.

1. Transmission Control Module - It is always the best idea to replace the faulty TCM with a new one so that the system functions normally.
2. Powertrain Control Module - A faulty or broken PCM needs immediate fixation so that you can avoid the P0868 error code getting stored.
3. Transmission Fluid Pressure Sensor - A damaged transmission fluid pressure sensor has to be changed soon to avoid system malfunctioning.
4. Automatic Transmission Module - Is this component broken? Are you looking for a replacement? Find them at Parts Avatar at the best prices.
5. Engine Control Module - An easy way to get rid of the P0868 error is to replace the damaged or faulty ECM.

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0868 here:

Common Symptoms

• Fuel consumption is high.
• Transmission refuses to shift correctly.
• You will see a warning light in the service engine, or the engine light will always be on.

Want to correct the Trouble Code P0868? Read these points mentioned below:

• The leaks in the transmission system must be fixed.
• Replacing the transmission temperature sensor.
• Changing the transmission high-pressure pump.
• Repairing or reconstructing the transmission.
• Altering the faulty PCM.

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P0868 code to be stored:

• You have to diagnose the P0868 error code with the help of a scanner.
• An experienced mechanic will assess the freeze frame data with the help of a scanner. This can help the mechanic to collect more data on this error code and check for other error codes that might be stored in the vehicle.
• If there is no sign of drivability issue identified by the mechanic, then he has to reset the error code and restart it, to see if the P0868 error code appears again.
• The error might be initiated wrongly if the code did not return immediately.
• If the error code still remains on further inspection, then he has to check the fluid level of the transmission.
• You will notice the transmission system to be leaky if the fluid level is low and the mechanic will quickly start inspecting the area of the leak.
• Once the location of the leak is found out, it can either be resolved quickly or revamped.
• If the mechanic finds out that there are too many leaky areas, then there can be possible damage to the transmission and so it must be replaced.
• If the level of fluid in the transmission is up to the correct level, then the mechanic will proceed further by checking the temperature sensors. After inspecting these sensors, only then the mechanic has to move further to see if the PCM or the transmission is faulty.
• Once the issue has been found, resolved and fixed, the mechanic will again test the system to see if the error codes appear to ensure that the diagnosis is successful.

Common Mistakes When Diagnosing the P0868 Code

P0868 error code usually appears because the mechanic or the driver fails to follow the protocol in the correct manner. If you are not following the protocol, then the vehicle might face troubles which further leads to misdiagnosis. The most common error is that even without properly inspecting the transmission for any damages, the mechanic will quickly try to fix the leak. In one such scenario, P0868 diagnosis can cause severe trouble in the system.