What Are Common Audi Transmission Codes List?

Audi Transmission Codes List are diagnostic trouble codes (DTCs) that indicate issues within the transmission system and understanding them is crucial for effective troubleshooting and repair. These codes can stem from a variety of causes, ranging from sensor failures to mechanical problems within the transmission itself.

If you’re encountering transmission problems with your Audi and need expert assistance, AutoExplain.com is here to help with remote diagnostic, programming, and software installation services to get your Audi back on the road quickly and efficiently. Let’s dive into the world of Audi transmission codes.

1. Decoding Audi Transmission Codes List: An Overview

Audi transmission codes are standardized alphanumeric codes that provide valuable information about potential problems within the vehicle’s automatic or manual transmission system. These codes are generated by the car’s computer, also known as the Engine Control Unit (ECU), when it detects an issue with the transmission’s operation.

• What Triggers a Transmission Code? A transmission code can be triggered by various factors, including:
  • Sensor malfunctions (e.g., speed sensors, temperature sensors)
  • Solenoid failures
  • Low transmission fluid level or pressure
  • Mechanical issues within the transmission (e.g., worn clutches, damaged gears)
  • Electrical problems (e.g., wiring issues, faulty connectors)
• Accessing Transmission Codes: Accessing these codes requires a diagnostic tool or scan tool that can connect to the vehicle’s On-Board Diagnostics (OBD-II) port. Once connected, the tool can retrieve and display the stored transmission codes, allowing technicians or car owners to begin the diagnostic process.

2. Understanding the Structure of Audi Transmission Codes

Audi transmission codes, like other OBD-II codes, follow a standardized format that provides clues about the nature and location of the problem. Here’s a breakdown of the code structure:

• First Character: Indicates the system affected:
  • P: Powertrain (engine and transmission)
  • B: Body
  • C: Chassis
  • U: Network communication
• Second Character: Specifies whether the code is generic or manufacturer-specific:
  • 0: Generic (SAE) code
  • 1: Manufacturer-specific code (Audi in this case)
• Third Character: Indicates the specific subsystem:
  • 1: Fuel and air metering
  • 2: Fuel and air metering (injector circuit)
  • 3: Ignition system or misfire
  • 4: Auxiliary emission controls
  • 5: Vehicle speed control and idle control system
  • 6: Computer output system
  • 7: Transmission
  • 8: Transmission
  • 9: Transmission
  • A: Hybrid Propulsion System
  • B: Hybrid Propulsion System
  • C: Hybrid Propulsion System
• Last Two Characters: These digits provide more specific information about the fault within the identified system.

3. Common Audi Transmission Codes and Their Meanings

Here’s a list of some common Audi transmission codes, along with their possible causes and potential solutions:

Code	Description	Possible Causes	Potential Solutions
P0700	Transmission Control System Malfunction	Defective shift solenoids, faulty transmission control module (TCM), wiring issues, low transmission fluid level, dirty transmission fluid	Replace faulty solenoids, repair or replace TCM, inspect and repair wiring, check and top up fluid level, flush and replace fluid
P0705	Transmission Range Sensor Circuit Malfunction	Defective transmission range sensor, wiring issues, misaligned sensor	Replace sensor, inspect and repair wiring, adjust sensor alignment
P0715	Input/Turbine Speed Sensor Circuit Malfunction	Defective speed sensor, wiring issues, faulty TCM	Replace sensor, inspect and repair wiring, repair or replace TCM
P0720	Output Speed Sensor Circuit Malfunction	Defective speed sensor, wiring issues, faulty TCM	Replace sensor, inspect and repair wiring, repair or replace TCM
P0730	Incorrect Gear Ratio	Low transmission fluid, worn clutches, faulty solenoids, mechanical damage inside the transmission	Check and top up fluid level, replace worn clutches, replace faulty solenoids, overhaul or replace transmission
P0731	Gear 1 Incorrect Ratio	Low transmission fluid, worn clutches, faulty solenoids, mechanical damage inside the transmission	Check and top up fluid level, replace worn clutches, replace faulty solenoids, overhaul or replace transmission
P0732	Gear 2 Incorrect Ratio	Low transmission fluid, worn clutches, faulty solenoids, mechanical damage inside the transmission	Check and top up fluid level, replace worn clutches, replace faulty solenoids, overhaul or replace transmission
P0733	Gear 3 Incorrect Ratio	Low transmission fluid, worn clutches, faulty solenoids, mechanical damage inside the transmission	Check and top up fluid level, replace worn clutches, replace faulty solenoids, overhaul or replace transmission
P0734	Gear 4 Incorrect Ratio	Low transmission fluid, worn clutches, faulty solenoids, mechanical damage inside the transmission	Check and top up fluid level, replace worn clutches, replace faulty solenoids, overhaul or replace transmission
P0735	Gear 5 Incorrect Ratio	Low transmission fluid, worn clutches, faulty solenoids, mechanical damage inside the transmission	Check and top up fluid level, replace worn clutches, replace faulty solenoids, overhaul or replace transmission
P0740	Torque Converter Clutch Circuit Malfunction	Defective torque converter clutch solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P0741	Torque Converter Clutch Circuit Performance or Stuck Off	Worn torque converter clutch, low transmission fluid, faulty solenoid	Replace torque converter, check and top up fluid level, replace faulty solenoid
P0750	Shift Solenoid A Malfunction	Defective shift solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P0753	Shift Solenoid A Electrical	Defective shift solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P0760	Shift Solenoid C Malfunction	Defective shift solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P0775	Pressure Control Solenoid B Malfunction	Defective pressure control solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P0796	Pressure Control Solenoid C Performance or Stuck On	Defective pressure control solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P0811	Excessive Clutch Slippage	Worn clutch, low transmission fluid, faulty clutch actuator	Replace clutch, check and top up fluid level, replace clutch actuator
P0841	Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance	Defective pressure sensor, wiring issues, low transmission fluid, faulty TCM	Replace pressure sensor, inspect and repair wiring, check and top up fluid level, repair or replace TCM
P0842	Transmission Fluid Pressure Sensor/Switch A Circuit Low	Defective pressure sensor, wiring issues, low transmission fluid, faulty TCM	Replace pressure sensor, inspect and repair wiring, check and top up fluid level, repair or replace TCM
P1740	Torque Converter Clutch Solenoid – Open Circuit or Short to Ground	Defective torque converter clutch solenoid, wiring issues	Replace solenoid, inspect and repair wiring
P1750	Solenoid Valve Power Supply – Open Circuit or Short to Ground	Wiring issues, faulty TCM	Inspect and repair wiring, repair or replace TCM
P1798	Transmission System Voltage Low	Low battery voltage, faulty alternator, wiring issues	Check battery voltage, test alternator, inspect and repair wiring
P1857	Load Signal from Engine Control Unit – Error Message	Communication issues between ECU and TCM, wiring problems	Diagnose and repair ECU, inspect and repair wiring
P1813	Pressure Control Valve 1 – Open Circuit or Short to Ground	Defective pressure control valve, wiring issues	Replace pressure control valve, inspect and repair wiring
P1818	Pressure Control Valve 2 – Open Circuit or Short to Ground	Defective pressure control valve, wiring issues	Replace pressure control valve, inspect and repair wiring
P2700	Shift Solenoid F Malfunction	Defective shift solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P2716	Pressure Control Solenoid D Electrical	Defective pressure control solenoid, wiring issues, faulty TCM	Replace solenoid, inspect and repair wiring, repair or replace TCM
P2755	Torque Converter Clutch Control Solenoid Electrical	Defective torque converter clutch solenoid, wiring issues	Replace solenoid, inspect and repair wiring
P2763	Torque Converter Clutch Pressure Control Solenoid Control Circuit Range/Performance	Defective torque converter clutch solenoid, wiring issues	Replace solenoid, inspect and repair wiring
P2765	Input/Turbine Speed Sensor B Circuit	Defective speed sensor, wiring issues, faulty TCM	Replace sensor, inspect and repair wiring, repair or replace TCM
P2767	Input/Turbine Speed Sensor B Circuit No Signal	Defective speed sensor, wiring issues, faulty TCM	Replace sensor, inspect and repair wiring, repair or replace TCM

Disclaimer: This table is not exhaustive, and the specific codes and their meanings may vary depending on the Audi model and year.

3.1. Common Audi Transmission Problems Indicated by Codes

Some Audi transmission codes point to specific, recurring problems. Recognizing these patterns can aid in diagnosis:

• Shift Solenoid Issues: Codes like P0750, P0760, P2700 often indicate problems with shift solenoids, which control the flow of transmission fluid to engage different gears. Symptoms include harsh shifting, failure to shift, or getting stuck in a gear.
• Speed Sensor Malfunctions: Codes such as P0715, P0720, P2765, P2767 can be due to faulty input or output speed sensors. These sensors provide data to the TCM, and their failure can cause erratic shifting or transmission failure.
• Torque Converter Problems: Codes like P0740, P0741, P1740, P2755, P2763 are related to the torque converter clutch, which is responsible for locking the engine and transmission together for improved fuel efficiency. Issues can lead to stalling, shuddering, or poor fuel economy.
• Fluid Pressure Issues: Codes such as P0841, P0842, P1813, P1818, P2809, and P2810 often point to problems with transmission fluid pressure, which is crucial for proper transmission operation. These issues can cause shifting problems or transmission damage.
• Gear Ratio Problems: Codes like P0730, P0731, P0732, P0733, and P0734 indicate that the transmission is not achieving the correct gear ratio, which can be due to worn clutches, faulty solenoids, or internal damage.

3.2. Electrical Issues in Audi Transmissions

Many Audi transmission problems stem from electrical issues. Here are some things to consider:

• Wiring Problems: Damaged, corroded, or loose wiring can cause a variety of transmission problems. Always check wiring harnesses and connectors for any signs of damage.
• Sensor Failures: Transmission sensors, such as speed sensors and pressure sensors, can fail over time. These sensors are essential for providing data to the TCM, so their failure can cause shifting problems.
• TCM Malfunctions: The Transmission Control Module (TCM) is responsible for controlling the transmission’s operation. A faulty TCM can cause a wide range of problems, including shifting issues, failure to shift, or complete transmission failure.

3.3. Mechanical Problems in Audi Transmissions

In addition to electrical issues, mechanical problems can also cause Audi transmission codes:

• Worn Clutches: The clutches inside the transmission are responsible for engaging and disengaging gears. Over time, these clutches can wear out, causing slippage and shifting problems.
• Damaged Gears: The gears inside the transmission can also be damaged due to wear and tear or excessive stress. Damaged gears can cause noise, vibration, and shifting problems.
• Valve Body Issues: The valve body is responsible for directing transmission fluid to the correct components. A faulty valve body can cause shifting problems or transmission failure.

4. Diagnosing Audi Transmission Problems

Diagnosing Audi transmission problems requires a systematic approach. Here are some steps to follow:

• Step 1: Retrieve the Trouble Codes: Use a scan tool to retrieve the stored transmission codes from the vehicle’s computer.
• Step 2: Research the Codes: Consult a repair manual or online database to understand the meaning of each code.
• Step 3: Inspect the Transmission: Check the transmission fluid level and condition. Look for any signs of leaks or damage.
• Step 4: Test the Sensors: Use a multimeter to test the transmission sensors, such as speed sensors and pressure sensors.
• Step 5: Check the Wiring: Inspect the wiring harnesses and connectors for any signs of damage.
• Step 6: Consult a Professional: If you’re not comfortable performing these steps yourself, consult a qualified mechanic.

5. Audi Transmission Repair Options

The best repair option for an Audi transmission problem depends on the nature and severity of the issue. Here are some possibilities:

• Minor Repairs: For minor issues, such as a faulty sensor or solenoid, a simple repair may be sufficient.
• Transmission Rebuild: If the transmission has suffered significant damage, a rebuild may be necessary. This involves disassembling the transmission, replacing any worn or damaged parts, and reassembling it.
• Transmission Replacement: In some cases, it may be more cost-effective to replace the entire transmission with a new or remanufactured unit.

6. The Importance of Proper Maintenance

Proper maintenance is essential for preventing Audi transmission problems. Here are some tips:

• Follow the Recommended Service Schedule: Consult your owner’s manual for the recommended service intervals for your transmission.
• Check the Transmission Fluid Regularly: Check the transmission fluid level and condition regularly.
• Use the Correct Transmission Fluid: Use only the transmission fluid that is recommended by Audi.
• Avoid Harsh Driving: Avoid harsh driving habits, such as rapid acceleration and hard braking, as these can put stress on the transmission.

7. How AutoExplain.com Can Help with Audi Transmission Problems

At AutoExplain.com, we understand the complexities of Audi transmission systems and the challenges technicians face when diagnosing and repairing them. That’s why we offer a range of remote services to help you get the job done right:

• Remote Diagnostics: Our team of experienced technicians can remotely diagnose Audi transmission problems using advanced diagnostic tools. We can help you identify the root cause of the problem and recommend the best course of action.
• ECU Programming: We offer ECU programming services to ensure that your Audi’s engine control unit is properly configured for optimal performance.
• TCM Programming: The Transmission Control Module (TCM) is responsible for controlling the transmission’s operation. We can program the TCM to ensure that it is functioning correctly.
• BCM Programming: The Body Control Module (BCM) controls various electrical functions in your Audi. We offer BCM programming services to address any issues with your vehicle’s electrical system.
• AdBlue System Support: We offer support for Audi vehicles equipped with AdBlue systems, which are used to reduce emissions.
• Navigation Updates: Keep your Audi’s navigation system up-to-date with our navigation update services.
• Key Programming: We can program new keys for your Audi if you have lost your original keys.

8. Why Choose AutoExplain.com for Audi Transmission Services?

Here are just a few reasons to choose AutoExplain.com for your Audi transmission service needs:

• Expert Technicians: Our team of experienced technicians are experts in Audi transmission systems.
• Remote Services: We offer convenient remote services that can save you time and money.
• Advanced Diagnostic Tools: We use the latest diagnostic tools to accurately diagnose Audi transmission problems.
• Competitive Prices: We offer competitive prices on all of our services.
• Customer Satisfaction: We are committed to providing our customers with the highest level of satisfaction.

9. Benefits of Remote Diagnostic and Programming Services

Remote diagnostic and programming services offer a number of benefits for Audi owners and technicians:

• Convenience: Remote services can be performed from anywhere with an internet connection.
• Cost Savings: Remote services can save you money on labor costs.
• Faster Turnaround Time: Remote services can often be performed more quickly than traditional services.
• Expert Assistance: Remote services provide access to expert technicians who can help you diagnose and repair Audi transmission problems.

10. Staying Up-to-Date with Audi Transmission Technology

The automotive industry is constantly evolving, and Audi transmission technology is no exception. It’s essential for technicians to stay up-to-date with the latest advancements in order to provide the best possible service:

• Attend Training Courses: Attend training courses offered by Audi or other reputable organizations.
• Read Technical Publications: Read technical publications, such as service manuals and technical bulletins.
• Join Online Forums: Join online forums and discussion groups to share information with other technicians.
• Use Online Databases: Utilize online databases to access the latest information on Audi transmission codes and repair procedures.

11. Real-World Examples of Audi Transmission Code Troubleshooting

Let’s consider some real-world examples of how Audi transmission codes can be used to troubleshoot problems:

• Example 1: P0730 (Incorrect Gear Ratio) A technician retrieves a P0730 code from an Audi. After checking the transmission fluid level and condition, they find that the fluid is low and dirty. They perform a transmission fluid flush and refill, and the problem is resolved.
• Example 2: P0750 (Shift Solenoid A Malfunction) A technician retrieves a P0750 code from an Audi. They use a multimeter to test the shift solenoid A and find that it is not functioning correctly. They replace the solenoid, and the problem is resolved.
• Example 3: P0741 (Torque Converter Clutch Circuit Performance or Stuck Off) A technician retrieves a P0741 code from an Audi. They inspect the torque converter clutch and find that it is worn. They replace the torque converter, and the problem is resolved.

12. Preventing Future Audi Transmission Issues

In addition to proper maintenance, there are other steps you can take to prevent future Audi transmission issues:

• Drive Responsibly: Avoid harsh driving habits, such as rapid acceleration and hard braking.
• Don’t Overload Your Vehicle: Avoid overloading your vehicle, as this can put stress on the transmission.
• Address Problems Promptly: Address any transmission problems promptly, as they can worsen over time.

13. Call to Action: Get Expert Help from AutoExplain.com

If you’re experiencing Audi transmission problems and need expert assistance, don’t hesitate to contact AutoExplain.com. Our team of experienced technicians is here to help you diagnose and repair your Audi’s transmission quickly and efficiently.

Contact us today via WhatsApp at (+84)967469410 or email at [email protected]. You can also visit our website at AutoExplain.com to learn more about our services. Our office is located at 1500 N Grant ST Sten Denver, CO 80203.

14. FAQ: Audi Transmission Codes List

14.1. What does the Audi transmission code P0700 mean?

The Audi transmission code P0700 indicates a malfunction in the transmission control system.

14.2. What are the common causes of Audi transmission code P0730?

Common causes of Audi transmission code P0730 include low transmission fluid, worn clutches, faulty solenoids, and mechanical damage inside the transmission.

14.3. How do I check the transmission fluid level on my Audi?

Refer to your owner’s manual for specific instructions on how to check the transmission fluid level on your Audi. In general, you will need to locate the transmission fluid dipstick (if equipped) and check the fluid level while the engine is running and the transmission is in park or neutral.

14.4. What type of transmission fluid should I use in my Audi?

Use only the transmission fluid that is recommended by Audi. Consult your owner’s manual or a qualified mechanic for the correct type of fluid for your vehicle.

14.5. How often should I change the transmission fluid in my Audi?

Follow the recommended service schedule in your owner’s manual for transmission fluid changes. In general, you should change the transmission fluid every 30,000 to 60,000 miles.

14.6. Can I drive my Audi with a transmission code?

It is not recommended to drive your Audi with a transmission code, as this can worsen the problem and lead to further damage. Consult a qualified mechanic as soon as possible.

14.7. How much does it cost to repair an Audi transmission?

The cost to repair an Audi transmission can vary depending on the nature and severity of the issue. Minor repairs may cost a few hundred dollars, while a transmission rebuild or replacement can cost several thousand dollars.

14.8. What is the difference between a transmission rebuild and a transmission replacement?

A transmission rebuild involves disassembling the transmission, replacing any worn or damaged parts, and reassembling it. A transmission replacement involves replacing the entire transmission with a new or remanufactured unit.

14.9. How can AutoExplain.com help me with my Audi transmission problems?

AutoExplain.com offers remote diagnostic, programming, and software installation services to help you diagnose and repair Audi transmission problems. Our team of experienced technicians can provide expert assistance from anywhere with an internet connection.

14.10. What are the benefits of using AutoExplain.com for Audi transmission services?

The benefits of using AutoExplain.com for Audi transmission services include convenience, cost savings, faster turnaround time, and access to expert technicians.

By understanding Audi transmission codes list and following the tips in this article, you can keep your Audi’s transmission running smoothly for years to come. And remember, AutoExplain.com is always here to help with any diagnostic or repair needs you may have.