Description of the P0964 fault code.
OBD2 Error Codes

P0964 Pressure control solenoid valve “B” control circuit open

26.05.2022 /

P0964 – OBD-II Trouble Code Technical Description

Trouble code P0964 indicates an open in the transmission pressure control solenoid valve "B" control circuit.

What does the fault code mean P0964?

Trouble code P0964 indicates an open in the transmission pressure control solenoid valve "B" control circuit. P0964 occurs when the control module (PCM) detects an open circuit in the transmission pressure control solenoid valve “B”, causing the solenoid valve to not operate properly due to the open control circuit.

In case of failure P09 64.

Possible reasons

Several possible reasons for the P0964 trouble code:

  • Open or short circuit in solenoid valve “B” control circuit.
  • Pressure control solenoid valve “B” is damaged or malfunctioning.
  • Problems with the wiring or connectors associated with the "B" solenoid valve.
  • There is a problem with the engine control module (PCM), which monitors the solenoid valve and detects an open circuit.

A thorough diagnosis will help pinpoint the source of the problem.

What are the symptoms of a fault code? P0964?

Symptoms for a P0964 trouble code may vary depending on the specific transmission control system and vehicle manufacturer, some of the possible symptoms include:

  • Gear shifting problems: The vehicle may have difficulty changing gears or may remain in one gear longer than usual.
  • Irregular gear shifts: The transmission may shift unevenly or harshly, causing jerking or vibration.
  • Increased fuel consumption: Due to improper functioning of the transmission, the vehicle may consume more fuel than usual.
  • Malfunction Indicator Light: The illumination of the malfunction indicator light on the instrument panel may indicate a problem with the transmission.

If the above symptoms occur, it is recommended that you contact a qualified auto mechanic to diagnose and repair the problem.

How to diagnose a fault code P0964?

To diagnose DTC P0964, follow these steps:

  1. Checking the transmission fluid: Check the level and condition of the transmission fluid. Insufficient fluid or contamination can cause the transmission to malfunction.
  2. Scanning error codes: Use a diagnostic scan tool to read error codes from the vehicle's ECU (Electronic Control Unit), including code P0964. This will help identify other related problems.
  3. Checking electrical connections: Check the electrical connections, including the connectors and wires associated with the pressure control solenoid valve B. Make sure all connections are secure and free from corrosion or damage.
  4. Checking the solenoid valve: Check the operation of pressure control solenoid valve B. This can be done using a multimeter to measure the resistance and ensure that the valve is functioning correctly.
  5. Checking other components: Examine other components of the transmission control system, such as sensors, solenoids, and wiring, to rule out other potential causes of the problem.
  6. After diagnosing and fixing the problem: After finding and correcting the cause of the P0964 code, clear the error codes using a diagnostic scan tool. After this, take it for a test drive to ensure that the problem has been successfully fixed.

If in doubt, it is recommended to contact an experienced specialist or certified car service center.

Diagnostic errors

When diagnosing DTC P0964, the following errors may occur:

  • Misinterpretation of data: Incorrect reading from the diagnostic scanner or incorrect interpretation of resistance or voltage values ​​when testing electrical components.
  • Skipping important steps: Not following all necessary diagnostic steps, such as checking the transmission fluid or checking electrical connections, may result in missing the root causes of the problem.
  • Insufficient expertise: Errors may occur due to insufficient experience or knowledge of transmission system diagnostic techniques among auto mechanics or car owners.
  • Malfunctions of other components: The error may be a malfunction of other components of the transmission control system that were not detected or taken into account during the diagnostic process.

How serious is the fault code? P0964?

Trouble code P0964 indicates an open in the transmission pressure control solenoid valve “B” control circuit. This is a serious problem because solenoid valves play an important role in regulating transmission fluid pressure, which affects proper gear shifting and overall transmission performance. If the “B” valve is not functioning properly due to an open control circuit, it may cause the transmission to malfunction, which can be dangerous and cause additional problems with the vehicle. Therefore, it is recommended that you immediately contact a qualified auto mechanic for diagnosis and repair.

What repair will help eliminate the code? P0964?

To resolve the P0964 code, follow these steps:

  1. Check Electrical Connections: Ensure that all electrical connections, including connectors and wires associated with the “B” solenoid valve and the transmission control module, are in good condition and not damaged or oxidized.
  2. Replace Solenoid Valve “B”: If the electrical connections are good, solenoid valve “B” may be faulty and need to be replaced. Before replacing the valve, make sure that the problem is actually with the valve and not with other components in the system.
  3. Check the transmission control module: In some cases, the cause may be a faulty transmission control module. Check it for damage or malfunction and replace it if necessary.
  4. Clear the code and take it for a test drive: After all repairs have been completed, clear the trouble code using a diagnostic scan tool and take it for a test drive to ensure the problem is resolved.

If you do not have experience in auto repair, it is recommended that you contact a qualified auto mechanic or auto repair shop for diagnosis and repair.

How to Diagnose and Fix P0964 Engine Code - OBD II Trouble Code Explain

P0964 – Brand specific information

Trouble code P0964 relates to electronic transmission control systems and can be found in various brands of cars, a list of some brands with explanations:

These are just a few of the car brands that may have a P0964 code, and the meaning may vary slightly depending on the specific model and year of the vehicle. For accurate information, it is recommended to consult the official repair manual or dealer of the particular vehicle brand.

Add a comment