P0972: OBD-II Shift Solenoid Valve "A" Control Circuit Trouble Code Range/Performance
OBD2 Error Codes

P0972: OBD-II Shift Solenoid Valve "A" Control Circuit Trouble Code Range/Performance

13.11.2023 /

P0972 – OBD-II Trouble Code Technical Description

Shift Solenoid "A" Control Circuit Range/Performance

What does the fault code mean P0972?

Every time your transmission shifts gears, the electronic control unit (ECU) or transmission control module (TCM) activates and deactivates a series of shift solenoids. These small electromechanical devices play a key role in directing pressurized transmission fluid to move necessary components, resulting in smooth, precise gear changes.

If the shift solenoid marked "A" does not function according to the preset parameters stored in the electronic control unit (ECU), the vehicle diagnostic system will activate DTC P0972. This code indicates a problem with the “A” solenoid, which can disrupt the normal shifting process and affect the overall performance of the transmission.

Possible reasons

Trouble code P0972 indicates problems with the shift solenoid labeled “A”. Possible causes for this error may include:

  1. Solenoid “A” malfunction: Solenoid “A” itself may be damaged, worn, or faulty. This may occur due to physical damage, corrosion, or wear and tear due to long-term use.
  2. Problems with wiring and connectors: Incorrect connections, breaks or shorts in the wiring, connections or connectors associated with the “A” solenoid can cause P0972.
  3. Transmission control module (TCM) problems: Malfunctions or damage to the transmission control unit can cause errors in the operation of the solenoids.
  4. Transmission fluid level is low or contaminated: A lack of transmission fluid or the presence of contaminants in it can affect the operation of the solenoids and cause errors.
  5. Mechanical transmission problems: Solenoid “A” malfunction can be caused by mechanical problems within the transmission, such as clogged or broken.
  6. Problems with sensors: Incorrect operation of transmission-related sensors can result in errors in solenoid “A” control.
  7. Power problems: Voltages outside the standard values ​​can affect the operation of the solenoids and cause errors.

To accurately identify the cause and eliminate the P0972 code, it is recommended to carry out detailed diagnostics, possibly using specialized equipment, at a car service center.

What are the symptoms of a fault code? P0972?

When the P0972 trouble code appears, transmission performance may be affected, resulting in the following symptoms:

  1. Gearshift problems:
    • Irregular or jerky gear shifting may be one of the first signs of a problem with the “A” solenoid.
  2. Switching delays:
    • If there is a problem with the “A” solenoid, there may be delays in shifting, which can make driving less comfortable and efficient.
  3. Hardness or uneven shifting:
    • The transmission may respond inconsistently to shift commands, resulting in rough or uneven shifts.
  4. Increasing engine speed:
    • Improper operation of solenoid “A” may result in increased engine speed when shifting gears, which may be noticeable while driving.
  5. Limited performance:
    • The vehicle may experience limited performance due to inefficient gear shifting and loss of transmission efficiency.
  6. Activation of the Check Engine indicator:
    • When a P0972 code appears, the Check Engine light on the dashboard will turn on.

It is important to note that symptoms may vary depending on the specific cause of the error and the transmission configuration in your vehicle. If you notice these symptoms, it is recommended that you contact a professional auto mechanic for a more accurate diagnosis and solution to the problem.

How to diagnose a fault code P0972?

The following steps are recommended to diagnose DTC P0972:

  1. Use a diagnostic scanner:
    • Connect an OBD-II diagnostic scanner to your vehicle's diagnostic port and read the P0972 trouble code as well as any other codes that may be stored.
  2. Interpret the data:
    • Interpret the data provided by the scan tool to identify specific parameters associated with solenoid “A” and other relevant data.
  3. Check the transmission fluid level:
    • Make sure the transmission fluid level is within the manufacturer's recommendations. If necessary, replace the fluid.
  4. Visual inspection of wiring and connectors:
    • Carefully inspect the wiring, connections and connectors associated with solenoid “A”. Look for damage, corrosion or breaks.
  5. Perform tests on solenoid “A”:
    • Check the resistance of solenoid “A” using a multimeter. Make sure the resistance meets the manufacturer's specifications. Replace the solenoid if necessary.
  6. Transmission control module (TCM) diagnostics:
    • Perform a detailed diagnosis of the transmission control module to identify problems with software or electronic components.
  7. Check sensors and other components:
    • Check the operation of transmission related sensors and other components that affect solenoid “A” operation.
  8. Checking the power supply:
    • Make sure the power supply voltage is stable, as unstable voltage may affect the solenoid's operation.
  9. Perform transmission pressure tests:
    • If possible, perform transmission pressure tests to verify hydraulic system operation.
  10. After diagnostics, perform the necessary repairs:
    • Depending on the problems identified, repair or replace parts such as solenoid “A”, wiring, transmission control module, and others.

If you are unsure of your skills or cannot identify and fix the problem yourself, it is recommended that you contact a professional auto mechanic or auto repair shop for additional assistance.

Diagnostic errors

When diagnosing the P0972 trouble code, various errors can occur that can affect how accurately you can determine the cause and resolve the problem. Here are some of the possible diagnostic errors:

  1. Skipping a visual inspection of wiring and connectors:
    • Skipping a visual inspection of wiring and connectors may result in missing breaks, corrosion, or other physical damage.
  2. Incorrect interpretation of data from the diagnostic scanner:
    • Incorrect interpretation of data from a diagnostic scanner can lead to errors in identifying specific problematic parameters.
  3. Incorrect diagnosis of solenoid “A”:
    • Incorrect tests of solenoid “A” or incorrect interpretation of the results may lead to an incorrect conclusion about its condition.
  4. Skipping Transmission Control Module (TCM) Test:
    • Neglected or insufficient diagnosis of the transmission control module may miss problems with software or electronic components.
  5. Ignoring additional error codes:
    • The presence of additional error codes besides P0972 can provide additional information about problems in the system, and ignoring them may result in key data being missed.
  6. Skipping transmission fluid level check:
    • Insufficient attention to the level and condition of the transmission fluid may miss possible problems associated with its level and quality.
  7. Incorrect interpretation of transmission pressure test results:
    • Improperly performing transmission pressure tests or misinterpreting the results may result in an incorrect analysis of the hydraulic system.
  8. Ignoring mechanical problems in the transmission:
    • Skipping a transmission mechanical inspection may result in missing problems affecting the “A” solenoid.

To prevent such errors, it is important to follow systematic diagnostic steps, pay attention to all aspects and conduct a comprehensive analysis of the system condition. If necessary, contact professional mechanics or car services for a more accurate diagnosis.

How serious is the fault code? P0972?

Trouble code P0972 indicates a problem with the shift solenoid, identified as “A.” The severity of this code can vary depending on the specific circumstances and how the transmission system responds to the problem.

Some potential consequences and factors that may influence the severity of the P0972 code include:

  1. Gearshift problems:
    • Incorrect or ineffective gear shifting can reduce overall vehicle performance and driving comfort.
  2. Possible transmission damage:
    • If a problem with the “A” solenoid is ignored for a long time, it can increase the stress on the transmission, which can ultimately lead to more serious damage and expensive repairs.
  3. Limitations in manual gear mode:
    • If the problem involves automatic transmission shifting to manual mode, this may create limitations in manual shift control.
  4. Fuel Economy Loss:
    • Improper transmission operation can result in loss of efficiency and therefore reduced fuel economy.
  5. Activation of the Check Engine indicator:
    • A persistent check engine light may indicate a permanent problem, which can affect the performance and operation of the vehicle.

It is important to note that the faster the problem is identified and corrected, the less likely there are serious consequences. If your Check Engine Light comes on and you find a P0972 code, it is recommended that you take it to a professional auto repair shop for diagnosis and repair.

What repair will help eliminate the code? P0972?

Troubleshooting a P0972 code involves detailed diagnostics and possible repair steps, which may vary depending on the identified cause of the problem. Here are some general steps that can be taken:

  1. Replacing or repairing solenoid “A”:
    • If solenoid “A” is identified as the cause, replacing or repairing this component may be a necessary step. If a solenoid fails, it is usually replaced.
  2. Checking and replacing wiring and connectors:
    • Perform a visual inspection of the wiring and connectors associated with solenoid “A”. Replace damaged wires or connectors.
  3. Transmission Control Module (TCM) Diagnostics and Maintenance:
    • Perform a detailed diagnosis of the transmission control module to identify software or electronic component problems. A software update or TCM replacement may be necessary.
  4. Checking the level and replacing transmission fluid:
    • Make sure the transmission fluid level is within the manufacturer's recommendations and replace it if necessary.
  5. Performing transmission pressure tests:
    • If possible, perform transmission pressure tests to evaluate hydraulic system performance.
  6. Checking and servicing the mechanical part of the transmission:
    • Check the transmission mechanical parts for problems that may affect solenoid “A” operation.
  7. Checking sensors and other components:
    • Check the operation of transmission related sensors and other components that affect solenoid “A” operation.
  8. Checking the power supply:
    • Make sure the voltage in the power supply system is stable.
  9. Check for other error codes:
    • Make sure you don't miss other error codes that may provide additional information about problems with the system.

Repair procedures may vary depending on the make and model of your vehicle. If you do not have experience in car repairs, it is recommended that you contact a professional auto repair shop to accurately diagnose and fix the problem.

What is P0972 Engine Code [Quick Guide]

P0972 – Brand-specific information

Trouble code P0972 refers to problems with the shift solenoid and its meaning may vary depending on the specific vehicle make and model. Each manufacturer may use its own unique designation for diagnostic codes. Below is a list of some car brands with their possible interpretations for code P0972:

  1. Ford:
    • P0972: Shift Solenoid “A” Control Circuit Low
  2. Chevrolet / GMC:
    • P0972: Shift Solenoid “A” Control Circuit Low
  3. Honda/Acura:
    • P0972: Shift Solenoid “A” Control Circuit Low
  4. BMW:
    • P0972: Shift Solenoid “A” Control Circuit Low
  5. Nissan:
    • P0972: Shift Solenoid “A” Control Circuit Low
  6. Toyota:
    • P0972: Shift Solenoid “A” Control Circuit Low
  7. Hyundai/Kia:
    • P0972: Shift Solenoid “A” Control Circuit Low
  8. Mercedes Benz:
    • P0972: Shift Solenoid “A” Control Circuit Low
  9. Volkswagen / Audi:
    • P0972: Shift Solenoid “A” Control Circuit Low
  10. Subaru:
    • P0972: Shift Solenoid “A” Control Circuit Low
  11. Mazda:
    • P0972: Shift Solenoid “A” Control Circuit Low
  12. Chrysler / Dodge / Jeep:
    • P0972: Shift Solenoid “A” Control Circuit Low

Please note that these definitions may vary depending on the year and model of the specific vehicle. For more accurate information, it is recommended to consult official sources, such as a service manual or consultation with car service professionals.

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