Error Code P0867: What It Means & What To Do?

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What does P0867 error code signify? How does this error code gets stored in the vehicle? If there is an improper transmission shift, then this error appears in the vehicle. The amount of fluid pressure that is going through the transmission is informed to the TCM by the transmission fluid pressure sensor. If the transmission fluid pressure sensor sends an improper signal which is detected by the TCM, then the P0867 error code will be stored in the vehicle.

A P0867 error code will be stored in the vehicle if the difference between the actual and desire line pressure is equal to 10 psi which is 0.7 kg/cm2 or more than that. The monitoring of the actual and desire line pressure is carefully done by the transmission control module (TCM). The open loop line pressure control is set as default by the transmission system which makes the duty cycle to be fixed in a solenoid. Based on the temperature and as well as the current gear, the duty cycle will alter considerably.

What causes this problem with Transmission Fluid Pressure?

• Transmission fluid is dirty.
• Transmission high-pressure pump is broken.
• Transmission keeps slipping.
• Transmission pressure sensor is damaged.
• Engine overheats.
• Defective PCM.

1. Transmission Control Module - A defective TCM has to be changed immediately so as to avoid the P0867 error code.
2. Powertrain Control Module - Is your PCM faulty? Do they malfunction? Then it is the best idea to replace them with a new PCM from Parts Avatar at the best prices.
3. Transmission Fluid Pressure Sensor - Transmission fluid pressure sensor has to function normally. Replace them soon if they are faulty.
4. Automatic Transmission Module - In most cases, a P0867 error code gets stored due to damaged automatic transmission module. Replace them as soon as possible.
5. Transmission Filter - Clean or replace the transmission filter if there are any blocks or damages. This can help you to avoid the P0867 error code.
6. Engine Control Module - Replacing the broken ECM is always best so you can avoid system malfunction.

It is essential 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 P0867 here:

Common Symptoms

• Fuel consumption is more.
• Improper shift transmission.

Here are some ways with the help of which you will be able to correct the OBD Code P0867

• Changing the automatic transmission fluid
• Replacing the filter.

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high-grade transmission control module, transmission fluid pressure sensor, an automatic transmission module, PCM, ECM and a lot more for our precious customers.

Here are some steps which you should follow in order to diagnose this P0867 fault code:

• You can initially begin the diagnosis by using a code reader and a digital voltmeter/ ohmmeter (DVOM) as it can be successful.
• If you are expecting a fruitful diagnosis then you have to gain control to access the wires schemes of the manufacturer as it can be highly helpful.
• Visually inspect every wires and connector of the PCM.
• If there are any broken, separated, open or shorted circuits, wires, connectors, and other components then it must be immediately replaced or changed.
• Once the repair is done, it is always good to recheck the system.
• If each of the connectors, wires and every other component are in proper working condition, then you can further proceed by fixing a scanner to the diagnostic port of the vehicle and storing every code and freeze frame data.
• You need this information as it can be highly helpful and help you to know if there are any erratic conditions which gave rise to this error code to be stored in the vehicle.
• Now you have to test the reference voltage by disconnecting the electrical connector from the transmission temperature sensor.
• You can always consult the service manual of your manufacturer to make sure it is true, else it is generally 5 volts usually.
• Is the ignition on and you find a 5-volt signal rotated to the run position? Then you have to further inspect the ground wire of the sensor.
• Now continue testing the sensor’s resistance if both the ground signal and reference signal are present with the help of a manufacturer’s temperature to resistance chart.
• You have to replace the defective sensor by relating your findings to the manufacturer’s specification in case it fails to obey.
• If you find both the sensor and voltage at the sensor to be within the suitable specification, then you have to perform a continuity test between the circuit and resistance between the sensor and PCM by disengaging the electrical connectors of the PCM.
• Visually inspect every circuits and component and repair them as needed.
• Once the repair is done, recheck the system.
• If each of the circuits and sensors is in proper work condition, then there can be defective PCM.
• But you must always note that a defective PCM is a very rare case which may require further reprogramming.

Common Mistakes When Diagnosing the P0867 Code

• Internal transmission faults.
• Faulty TCM.
• Reduced level of transmission fluid.
• Failure of the transmission fluid pressure sensor.
• Electrical wire problem.