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P0780 Nissan Code - Shift Control System Fault

Quick Answer

The P0780 code for Nissan vehicles indicates a fault in the shift control system, specifically related to the shift solenoid C. Common causes include Faulty shift solenoid C, Wiring issues in the shift solenoid circuit, Low transmission fluid levels. 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
P0780 Nissan indicates Shift Control System Fault.
Common causes
Common causes include Faulty shift solenoid C, Wiring issues in the shift solenoid circuit, Low transmission fluid levels.
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 05, 2024
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Code P0780 Nissan Description

The P0780 code for Nissan vehicles indicates a fault in the shift control system, specifically related to the shift solenoid C. This code is typically triggered when the Powertrain Control Module (PCM) detects an abnormal voltage or resistance in the shift solenoid circuit. The shift solenoid is responsible for controlling the hydraulic pressure inside the transmission, which in turn determines the gear shifting process. When this system malfunctions, it can lead to erratic shifting behavior, transmission slipping, harsh shifting, or even the transmission being stuck in a single gear.

OBDII Code P0780 Nissan - Shift Control System Fault
P0780 Nissan Code - Shift Control System Fault

Common Causes of P0780 Nissan

  1. Faulty shift solenoid C
  2. Wiring issues in the shift solenoid circuit
  3. Low transmission fluid levels
  4. Dirty or contaminated transmission fluid
  5. Internal transmission damage

Symptoms of P0780 Nissan

  1. Erratic shifting behavior
  2. Transmission slipping
  3. Harsh shifting between gears
  4. Transmission stuck in a single gear
  5. Illumination of the Check Engine Light

How to Fix P0780 Nissan

  1. Begin by checking the transmission fluid level and condition. Top off or replace the fluid if necessary.
  2. Inspect the wiring harness and connectors in the shift solenoid circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the shift solenoid C for proper operation. Replace if it fails to function correctly.
  4. Clear the diagnostic trouble codes from the PCM and reset the system.
  5. Test drive the vehicle to ensure that the shifting issue has been resolved.

Cost to Fix P0780 Nissan

The cost of repairing a P0780 code in a Nissan vehicle can vary depending on the specific cause of the issue. On average, the cost of replacing a shift solenoid C and addressing related wiring or fluid issues can range from $200 to $500. Additional costs may include diagnostic fees and labor charges, which can add up to a total repair bill of $300 to $800. It's recommended to consult with a qualified mechanic or dealership to get an accurate estimate based on your vehicle's make and model, as well as your location.

When is the Code Detected?

The P0780 codes is detected when no rotation change occurs between input (turbine revolution sensor) and output (revolution sensor) and shifting time is long or when shifting ends immediately or when engine revs up unusually during shifting.

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Information for Specific Nissan Models

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 P0780 Nissan Code

1. What are the common symptoms of OBDII code P0780 in a Nissan?

- Common symptoms include harsh shifting, erratic shifting, transmission slipping, and the transmission staying in one gear.

2. What are the possible causes of the Shift Control System Fault (P0780) code in a Nissan?

- Possible causes include a faulty shift solenoid, low transmission fluid, a damaged or worn transmission valve body, or issues with the transmission control module.

3. How serious is the P0780 code in a Nissan?

- The P0780 code indicates a fault in the shift control system, which can lead to transmission issues. It is important to address this code promptly to avoid further damage to the transmission.

4. Can I continue driving my Nissan with the P0780 code?

- It is not recommended to continue driving the vehicle with the P0780 code as it can lead to further transmission problems and potential safety risks. It is advisable to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose the Shift Control System Fault (P0780) in my Nissan?

- Diagnosing the P0780 code typically involves performing a thorough inspection of the transmission system, checking the transmission fluid level and condition, and using a scan tool to retrieve additional fault codes.

6. Is it possible to repair the P0780 code in a Nissan by simply clearing the code?

- Clearing the P0780 code may temporarily reset the Check Engine Light, but it will not fix the underlying issue causing the fault. Proper diagnosis and repair are necessary to resolve the problem.

7. What are some repair tips for addressing the P0780 code in a Nissan?

- Repair tips may include checking and topping up the transmission fluid, inspecting and replacing the shift solenoid, cleaning or replacing the transmission valve body, and ensuring proper electrical connections.

8. Can a DIY enthusiast fix the Shift Control System Fault (P0780) in a Nissan?

- While some basic maintenance tasks related to the P0780 code can be performed by DIY enthusiasts, diagnosing and repairing complex transmission issues may require specialized tools and expertise best left to professionals.

9. How much does it typically cost to repair the P0780 code in a Nissan?

- The cost of repairing the P0780 code in a Nissan can vary depending on the underlying issue, parts needed for repair, labor costs, and whether the work is performed at a dealership or an independent repair shop.

10. How can I prevent the Shift Control System Fault (P0780) in my Nissan in the future?

- To prevent the recurrence of the P0780 code, regular maintenance of the transmission system, including checking and changing the transmission fluid as recommended, can help maintain the health of the transmission and reduce the likelihood of faults.

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