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P0797 Infiniti Code - Pressure Control Solenoid 'C' Stuck On

Quick Answer

The P0797 code in Infiniti vehicles indicates that the Pressure Control Solenoid 'C' is stuck on. Common causes include Faulty pressure control solenoid 'C', Wiring issues, Malfunctioning 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 Infiniti indicates Pressure Control Solenoid 'C' Stuck On.
Common causes
Common causes include Faulty pressure control solenoid 'C', Wiring issues, Malfunctioning 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 11, 2024
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Code P0797 Infiniti Description

The P0797 code in Infiniti vehicles indicates that the Pressure Control Solenoid 'C' is stuck on. This solenoid is responsible for regulating the hydraulic pressure within the transmission, which is crucial for smooth shifting and overall performance. When this solenoid gets stuck in the "on" position, it can lead to various issues within the transmission system.

OBDII Code P0797 Infiniti - Pressure Control Solenoid 'C' Stuck On
P0797 Infiniti Code - Pressure Control Solenoid 'C' Stuck On

Common Causes of P0797 Infiniti

  1. Faulty pressure control solenoid 'C'
  2. Wiring issues
  3. Malfunctioning transmission control module
  4. Clogged transmission filter
  5. Low transmission fluid level

Symptoms of P0797 Infiniti

  1. Harsh shifting
  2. Delayed gear engagement
  3. Transmission slipping
  4. Transmission going into limp mode
  5. Illumination of the Check Engine Light

How to Fix P0797 Infiniti

  1. Diagnose the exact cause of the issue using a scan tool to confirm the P0797 code.
  2. Inspect the pressure control solenoid 'C' and its wiring for any signs of damage or wear.
  3. Check the transmission fluid level and condition, topping off or replacing if necessary.
  4. Test the transmission control module for proper functioning and replace if needed.
  5. Clear the trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0797 Infiniti

The cost of repairing a Pressure Control Solenoid 'C' Stuck On code in an Infiniti vehicle can vary depending on the exact cause of the issue. In general, the cost of parts for this repair could range from $100 to $300, while labor costs could add an additional $150 to $300. Overall, the total cost of this repair could be anywhere from $250 to $600. It's important to keep in mind that these are rough estimates, and actual costs may vary based on the specific circumstances of the repair and the rates charged by the auto repair shop.

What does this mean?

Tech Notes for P0797 Infiniti

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.

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