Engine-Codes.com
Engine-Codes – Generic – P0780

P0780 Code - Shift Control System Fault

Quick Answer

The P0780 code indicates a fault in the shift control system of the vehicle. Common causes include Faulty shift solenoid, Low transmission fluid levels, Contaminated or degraded transmission fluid. 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 indicates Shift Control System Fault.
Common causes
Common causes include Faulty shift solenoid, Low transmission fluid levels, Contaminated or degraded transmission fluid.
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 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0780 Description

The P0780 code indicates a fault in the shift control system of the vehicle. This code typically points to an issue with the shift solenoid, which is responsible for controlling the transmission's shifting process. The shift solenoid is an electromechanical device that directs transmission fluid to the appropriate clutch packs to engage the desired gear. When this system malfunctions, it can lead to problems with shifting gears smoothly and efficiently.

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

Common Causes of P0780

  1. Faulty shift solenoid
  2. Low transmission fluid levels
  3. Contaminated or degraded transmission fluid
  4. Wiring or electrical issues
  5. Mechanical problems within the transmission

Symptoms of P0780

  1. Harsh or delayed shifting
  2. Erratic shifting behavior
  3. Transmission slipping
  4. Reduced fuel efficiency
  5. Illumination of the check engine light

How to Fix P0780

  1. Begin by conducting a thorough diagnostic scan to confirm the P0780 code and identify any other related issues.
  2. Check the transmission fluid level and condition. Top off or replace the fluid as needed.
  3. Inspect the shift solenoid and related wiring for damage or corrosion. Replace any faulty components.
  4. Clear the trouble codes and reset the transmission control module.
  5. Test drive the vehicle to ensure that the shifting issue has been resolved.

Cost to Fix P0780

The cost of repairing a shift control system fault can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for a shift solenoid replacement can range from $50 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost for a P0780 code can typically range from $150 to $500. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the labor rates of the repair shop. It's advisable to consult with a professional mechanic to get a more accurate cost estimate for your specific situation.

Need more information about the P0780 code?

Need more information on how to fix the P0780 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0780 code diagnosed by a professional: Find a repair shop in your area

Code P0780 Information for Specific Makes

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 Code

1. What does the OBDII code P0780 mean?

P0780 indicates a fault in the shift control system, which means the transmission is having difficulty shifting properly due to an issue with the control mechanisms.

2. What are the common symptoms of a P0780 code?

Symptoms include erratic shifting, failure to shift gears, transmission slipping, poor fuel economy, or the transmission being stuck in one gear.

3. What causes the P0780 code to appear?

Common causes include low or dirty transmission fluid, a malfunctioning shift solenoid, damaged wiring or connectors, a faulty transmission control module (TCM), or internal transmission issues.

4. Can I drive my car with a P0780 code?

Driving with a P0780 code is not recommended, as it can lead to further damage to the transmission and leave you stranded if the vehicle becomes inoperable.

5. How is the P0780 code diagnosed?

A mechanic will typically use a scan tool to read the code, inspect the transmission fluid, test the shift solenoids, check wiring and connections, and possibly perform a transmission pressure test.

6. How can I fix a P0780 code?

Repairs may involve replacing the transmission fluid, repairing or replacing a faulty shift solenoid, fixing damaged wiring, or addressing internal transmission issues.

7. Will resetting the check engine light fix the P0780 code?

Resetting the light may clear the code temporarily, but it will return if the underlying issue is not resolved.

8. Can low transmission fluid cause a P0780 code?

Yes, low or dirty transmission fluid can cause shifting issues and trigger the P0780 code.

9. How much does it cost to repair a P0780 code?

Repair costs vary depending on the issue, ranging from $100 for a fluid change to over $1,000 for internal transmission repairs.

10. Can a bad TCM cause the P0780 code?

Yes, a faulty transmission control module can disrupt the shift control system and trigger the P0780 code.

Discuss the causes and fixes for P0780 OBDII Code

Submit a New Comment

  • What I need to get done for a shift control system fault on a 2004 nissian maxima

    Reply to Comment

  • Start by inspecting the transmission fluid level and condition. If the fluid is OK, the you may have to have a transmission specialist inspect the transmission for you.

    Reply to Comment

  • 2000 Toyota Camry where should I start first when trying to diagnose the issue that is bringing up the error code?

    Reply to Comment

  • Start by inspecting the transmission fluid level and condition. If the fluid is low, top it off. If the fluid smells burnt, you may have to have a transmission shop inspect the transmission for you.

    Reply to Comment