AutoCodes – Audi – P0780 Audi

P0780 Audi Code - Shift Malfunction

Quick Answer

The Transmission Control Module (TCM) monitors the transmission mechanical shifting through various sensors. 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: P0780 Audi indicates 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.

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Code Popularity 11,005

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0780 Audi Description

The Transmission Control Module (TCM) monitors the transmission mechanical shifting through various sensors. This malfunction is detected when the A/T does not shift as instructed by the TCM. This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking,improper solenoid valve operation, etc.

OBDII Code P0780 Audi - Shift Malfunction - AutoCodes.com — P0780 Audi Code - Shift Malfunction

What does this mean?

What are the Possible Causes of the DTC P0780 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 P0780 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 P0780 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.

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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 P0780 Audi Code

1. What does the OBDII code P0780 mean on an Audi?

P0780 indicates a "Shift Malfunction," meaning the transmission control module (TCM) has detected an issue with gear shifting in the automatic transmission.

2. What are the common symptoms of the P0780 code on an Audi?

Symptoms may include harsh or delayed shifting, transmission slipping, poor acceleration, the transmission being stuck in one gear, or the check engine light being illuminated.

3. What causes the P0780 code on an Audi?

Common causes include low transmission fluid levels, a malfunctioning transmission solenoid, a faulty transmission control module, internal transmission damage, or electrical issues like damaged wiring or connectors.

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

Driving with the P0780 code is not recommended, as it can cause further damage to the transmission and may lead to unsafe driving conditions.

5. How do I fix the P0780 code on an Audi?

Repairs may involve checking and refilling transmission fluid, replacing faulty solenoids, repairing damaged wiring, reprogramming or replacing the TCM, or addressing internal transmission issues.

6. How can low transmission fluid cause the P0780 code?

Low transmission fluid can reduce hydraulic pressure, preventing proper gear engagement and shifting, which triggers the P0780 code.

7. How much does it cost to repair the P0780 code on an Audi?

Repair costs vary depending on the root cause, ranging from $100–$300 for fluid and solenoid replacements to $1,000 or more for major transmission repairs.

8. Can a faulty TCM cause the P0780 code?

Yes, a defective transmission control module can misinterpret or fail to send proper signals, leading to shift malfunctions and the P0780 code.

9. How do I diagnose the P0780 code on my Audi?

Diagnosis typically involves using an OBDII scanner to confirm the code, inspecting the transmission fluid, testing the solenoids, checking wiring and connectors, and possibly performing a TCM diagnostic.

10. Is the P0780 code specific to Audi vehicles?

No, the P0780 code is a generic OBDII code and can appear on vehicles of various makes and models with automatic transmissions, but the repair process may differ slightly by manufacturer.