AutoCodes – Audi – P0784 Audi

P0784 Audi Code - 4-5 Shift Malfunction

Quick Answer

This P0784 code indicates that the 4-5 shift valve in the valve body is locked in the direction of the spring compression. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve. 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
P0784 Audi indicates 4-5 Shift Malfunction.
Common causes
Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 8,918
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0784 Audi Description

This P0784 code indicates that the 4-5 shift valve in the valve body is locked in the direction of the spring compression. The Transmission Control Module (TCM) controls the gearshifts by turning the shift solenoid valves "ON/OFF" and switching oil pressure to the valves in the valve body. The TCM calculates the "actual" transmission gear by comparing the signals from the input speed sensor and the output speed sensor.
OBDII Code P0784 Audi - 4-5 Shift Malfunction - AutoCodes.com
P0784 Audi Code - 4-5 Shift Malfunction

What are the Possible Causes of the DTC P0784 Audi?

  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty shifting solenoid valve
  • Shifting solenoid valve harness is open or shorted
  • Shifting solenoid valve circuit poor electrical connection

How to Fix the DTC P0784 Audi?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0784 Audi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0784 Audi code?

Need more information on how to fix the P0784 Audi code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0784 Audi code diagnosed by a professional: Find a repair shop in your area

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 P0784 Audi Code

1. What does OBDII code P0784 mean on an Audi?

P0784 indicates a "4-5 Shift Malfunction," meaning the transmission is having trouble completing the shift from fourth to fifth gear.

2. What are the common symptoms of code P0784 in an Audi?

Symptoms may include rough or delayed shifting, the transmission staying stuck in one gear, reduced fuel efficiency, or the Check Engine Light turning on.

3. What causes the P0784 code on an Audi?

Common causes include low or dirty transmission fluid, a faulty shift solenoid, wiring or connector issues, or internal transmission damage.

4. Can driving with a P0784 code damage my Audi?

Yes, continued driving with this code can lead to further transmission damage or unsafe driving conditions due to shifting issues.

5. How do I diagnose the P0784 code on my Audi?

Start by checking the transmission fluid level and condition, inspecting wiring and connectors, and performing tests on the shift solenoids.

6. How can I fix the P0784 code on my Audi?

Repairs may involve replacing the shift solenoid, addressing wiring problems, changing the transmission fluid, or rebuilding the transmission if internal damage is found.

7. Is P0784 a serious issue for my Audi?

Yes, it can be serious as it affects the transmission's shifting ability, potentially leading to further damage and unsafe driving conditions.

8. Can low transmission fluid cause the P0784 code?

Yes, low or contaminated transmission fluid can cause improper shifting and trigger the P0784 code.

9. How much does it cost to repair a P0784 code on an Audi?

Repair costs can range from $100 for a fluid change to $2,000 or more for major transmission repairs, depending on the root cause.

10. Can I clear the P0784 code without fixing the issue?

Clearing the code without addressing the underlying issue is not recommended, as the problem will likely return and may worsen.

Discuss the causes and fixes for P0784 Audi OBDII Code

Code P0784 Audi comments

No comments found for this page.

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