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P0797 2006 Nissan Altima Sedan Code - Pressure Control Solenoid 'C' Stuck On

Quick Answer

The P0797 diagnostic trouble code (DTC) for a 2006 Nissan Altima Sedan indicates that the Pressure Control Solenoid 'C' is stuck on. Common causes include Faulty pressure control solenoid, Wiring issues or electrical problems, Defective transmission control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0797 2006 Nissan Altima Sedan indicates Pressure Control Solenoid 'C' Stuck On.
Common causes
Common causes include Faulty pressure control solenoid, Wiring issues or electrical problems, Defective transmission control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0797 2006 Nissan Altima Sedan Description

The P0797 diagnostic trouble code (DTC) for a 2006 Nissan Altima Sedan indicates that the Pressure Control Solenoid 'C' is stuck on. This code is specifically related to the transmission system of the vehicle. The pressure control solenoid is responsible for regulating the hydraulic pressure within the transmission, which is crucial for proper gear shifting and overall transmission performance.

OBDII Code P0797 2006 Nissan Altima Sedan - Pressure Control Solenoid 'C' Stuck On
P0797 2006 Nissan Altima Sedan Code - Pressure Control Solenoid 'C' Stuck On

Common Causes of P0797 2006 Nissan Altima Sedan

  1. Faulty pressure control solenoid
  2. Wiring issues or electrical problems
  3. Defective transmission control module
  4. Low transmission fluid levels
  5. Internal transmission problems

Symptoms of P0797 2006 Nissan Altima Sedan

  1. Harsh or delayed shifting
  2. Slipping gears
  3. Transmission overheating
  4. Illumination of the Check Engine Light
  5. Decreased fuel efficiency

How to Fix P0797 2006 Nissan Altima Sedan

  1. Perform a thorough diagnostic scan to confirm the P0797 code and identify any other related issues.
  2. Inspect the pressure control solenoid 'C' for proper operation and replace if necessary.
  3. Check the wiring and electrical connections related to the solenoid for any damage or corrosion.
  4. Test the transmission control module for proper function and replace if found to be defective.
  5. Ensure proper transmission fluid levels and quality, and perform a transmission fluid flush if needed.

Cost to Fix P0797 2006 Nissan Altima Sedan

The typical repair costs for addressing a Pressure Control Solenoid 'C' Stuck On issue in a 2006 Nissan Altima Sedan can vary depending on the extent of the problem and the specific parts and labor required. On average, the repair costs for this type of issue can range from $200 to $500. However, it's important to note that the actual costs can be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the type of engine. Additionally, labor rates at auto repair shops can vary widely, with hourly rates typically ranging from $80 to $150. To get a more accurate estimate, it's recommended to consult with local auto repair shops.

What does this mean?

Tech Notes for P0797 2006 Nissan Altima Sedan

When a transmission solenoid is malfunctioned, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is dirty, it's recommended to change the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a mechanical transmission failure and that the transmission will need to be rebuilt or replaced.

When is the Code Detected?

The gear required by the ECM does not match the actual gear when driving

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0797 2006 Nissan Altima Sedan Code

1. What does the OBDII code P0797 mean on a 2006 Nissan Altima Sedan?

P0797 indicates that the transmission control module (TCM) has detected that the pressure control solenoid 'C' is stuck in the "on" position, causing improper transmission fluid pressure regulation.

2. What are the common symptoms of the P0797 code on a 2006 Nissan Altima?

Symptoms include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, and potentially the vehicle going into limp mode.

3. What causes the P0797 code to trigger in a 2006 Nissan Altima?

Common causes include a faulty pressure control solenoid, dirty or contaminated transmission fluid, a clogged transmission filter, wiring issues, or internal transmission damage.

4. Can driving with the P0797 code damage my 2006 Nissan Altima?

Yes, driving with this code can cause further transmission damage, as improper fluid pressure regulation may lead to overheating or excessive wear on internal components.

5. How do I diagnose the P0797 code on a 2006 Nissan Altima?

Diagnosis typically involves scanning for other codes, inspecting the transmission fluid for contamination, testing the pressure control solenoid, and checking wiring and connectors for damage or corrosion.

6. How can I fix the P0797 code on my 2006 Nissan Altima?

Repairs may include replacing the pressure control solenoid, flushing and replacing the transmission fluid, replacing the transmission filter, or repairing damaged wiring.

7. How much does it cost to fix the P0797 code on a 2006 Nissan Altima?

The cost can vary widely. A solenoid replacement may cost between $200 and $500, while more extensive repairs, like fixing internal transmission issues, may cost significantly more.

8. Can low transmission fluid cause the P0797 code on a 2006 Nissan Altima?

Yes, low or dirty transmission fluid can cause pressure control solenoids to malfunction, potentially triggering the P0797 code.

9. Is a transmission flush necessary to fix the P0797 code on a 2006 Nissan Altima?

A flush may be necessary if the transmission fluid is dirty or contaminated, as clean fluid is critical for solenoid operation and overall transmission performance.

10. Can I clear the P0797 code without fixing the problem on a 2006 Nissan Altima?

Clearing the code without addressing the underlying issue will not resolve the problem, and the code is likely to return when the fault is detected again.

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