Error Code P0997: What It Means & What To Do?

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The trouble code P0997 can be explicated as Shift Solenoid “F” Control Circuit Range/Performance Issue. The automatic transmission can shift easily as per the driving needs because of the presence of shift timing solenoid. It is the transmission control module which checks well as controls the functionality of the solenoids.

The specific sequence that solenoid valves operate varies depending on the manufacturer. Each transmission manufacturer uses solenoid valves in different combinations based on their individual design. However, if code P0997 is present, the transmission will contain shift solenoid F, or SSF on the valve body in some form. Shift solenoids are numbered alphabetically, so shift solenoid F indicates there are at least six shift solenoids on the valve body.

What causes this problem with the Shift Solenoid "F" Control Circuit Range/Performance?

• Faulty shift solenoid
• Malfunctioning automatic transmission fluid
• There can be inoperative wiring harness
• TCM might be flawed
• Some issues related to the ECM
• Imperfect Pin/connector

1. Auto Transmission Shift Solenoid - There can be some issues with the Auto Transmission Shift Solenoid due to which you may see P0997 code appearing over and over again. Visit us to buy best quality Auto Transmission Shift Solenoid online.
2. Automatic Transmission Valve Body Kit - A lot of issues can arise due to defective Automatic Transmission Valve Body Kit. Did you just see P0997 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Automatic Transmission Filter - Faulty Automatic Transmission Filter can be the reason P0997 code is flashing. Visit us to purchase top notch Automatic Transmission Filter online.
4. Engine Wiring Harness - It is an important auto part which needs full care. A faulty Engine Wiring Harness can be a reason behind the flashing up of P0997 code.
5. Body Control Module Component - OBD Code P0997 can appear because of faulty Body Control Module Component.
6. Automatic Transmission Fluid - P0997 error code also relates to problems with the Automatic Transmission Fluid. Find Automatic Transmission Fluid with us.
7. Powertrain Control Module - P0997 code flashing? Get your Powertrain Control Module inspected from a mechanic.

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 P0997 here:

Common Symptoms

• Inferior driveability
• Bad acceleration
• Fixed in gears
• Unpredictable shifting
• Ineffective shift timing
• Diminishing performance
• Transmission sliding

Here are some ways with the help of which you will be able to correct the OBD Code P0997:

• Carefully adjust the faults in the shift/timing solenoid valve circuit
• Make sure to mend the faulty pump in the transmission
• It is essential to restore the mechanical failures in the transmission
• Rehabilitate the dirty transmission fluid
• Repair or replace the quirky shift solenoid, or shift solenoid pack
• Clear the internal transmission fluid passages which have been blocked
• Malfunctioning TCM or PCM should be repaired or replaced as per the need

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Here are some steps which you should follow in order to diagnose this P0997 fault code:

You must always start with a technical service bulletin search for your particular vehicle. It is essential to inspect the automatic transmission fluid. You must change you fluid if it is grimy, smells burnt, overfilled and unusual colour. If you've owned your vehicle for 30,000 to 60,000 miles and you do not remember when was the last time you changed you fluid or have any records of it, not only may this be your issue, but you should follow your maintenance schedule to avoid this situation. Former fluid is mucky fluid, grimy fluid can cause blockages and blockages can be a big reason this fault code is appearing so you must change your fluid! The manufacturers recommended steps should be followed properly when you are inspecting ATF. This basic step can differ a meaningful amount between the models as well as makes.

The fluid is in nice condition, code is still present and symptoms exist? It all depends upon your specific model, the shift solenoid may be accessible externally. Now if you find out that this is the case, then you should check the solenoid and its harness/connectors to find out the signs of defect. All the issues should be repaired or replaced as per the need. It would be helpful if you will have a peak for any leaks as well! If your shift solenoid is internal, then you should attempt to access it, work around it for now. Exhaust other avenues, internal transmission diagnosing and repairing should be left to a certified technician. The TCM and harnesses involved in this circuit may be subject to rasping road conditions so make sure everything is complete in all aspects.

After that the shift timing solenoid should be inspected. You may be able to test the solenoid itself multiple ways. One test may include a resistance test where you use a multimeter to measure the resistance between the pins in the solenoid to verify to a degree its electrical integrity. Then the other would include manually applying voltage to the solenoid to verify its mechanical operation. You should specify either one in your manufacturers service manual/technical literature.

The circuit from the TCM should be tested properly. Then check the functionality of the sensor and its circuit by performing the same tests as above but from the pins at the TCM and/or ECM. This trick would be very helpful in verifying the integrity of the solenoid as well as electrical integrity.

Common Mistakes When Diagnosing The P0997 Code

One of the most common mistakes when you are diagnosing the P0997 trouble code is that you do not inspect the shift solenoid circuit when the shift solenoids are being replaced. The technicians should keep this thing in mind that they must look electrical components before replacing any parts which can give rise to P0997 error code