P0997 code is related to an issue with the Shift Solenoid “F” control circuit’s range or performance in the vehicle’s transmission system.
P0997 Shift Solenoid “F” Control Circuit Range/Performance
Code symptoms P0997.
– Delayed or harsh shifting between gears
– Engine stalling when coming to a stop
– Decreased fuel efficiency
– Illuminated check engine light
Causes of the code P0997.
1. Faulty shift solenoid “F”: The shift solenoid “F” itself may be malfunctioning due to wear and tear or internal electrical issues.
2. Wiring issues: The wiring connected to the shift solenoid “F” may be damaged, corroded, or improperly connected, leading to a poor electrical connection.
3. Solenoid control circuit problems: Issues with the control circuit that sends signals to the shift solenoid “F” can cause performance range or performance issues.
4. Transmission fluid issues: Low or dirty transmission fluid can affect the proper functioning of the shift solenoid “F” and lead to performance problems.
5. Internal transmission problems: Internal mechanical issues within the transmission, such as valve body problems or pressure regulation issues, can also trigger a P0997 code related to the shift solenoid “F”.
Code Solutions P0997.
1. Check the wiring and connectors related to the Shift Solenoid “F” circuit for any damage, corrosion, or looseness. Repair or replace any damaged components as needed.
2. Inspect the Shift Solenoid “F” to ensure it is functioning properly. Test the solenoid using a multimeter to verify that it is within the specified resistance range.
3. Update the transmission control module (TCM) with the latest software. Sometimes a software update can resolve issues with solenoid performance.
4. Perform a systematic diagnostic procedure to identify any other potential issues that may be causing the Shift Solenoid “F” performance problem, such as low transmission fluid levels or a faulty TCM.
5. If all else fails, consider replacing the Shift Solenoid “F” altogether. A faulty solenoid may lead to performance issues, so replacing it with a new one may resolve the P0997 trouble code.