Alton Brobst As a Subaru vehicle owner or service provider, you may have encountered the dreaded transmission issues that could potentially cost you a fortune in repairs. However, knowing how to read Subaru transmission codes can help you troubleshoot the issue and save money on costly repairs. In this article, we will provide a comprehensive guide on how to read Subaru transmission codes, interpret them, and troubleshoot common issues. So, let’s get started.
What are Subaru Transmission Codes?
Subaru transmission codes are diagnostic trouble codes (DTCs) that are generated by the car’s onboard computer system when there is an issue with the transmission. The codes provide a way to diagnose the issue and identify the specific component that is causing the problem. Each code corresponds to a specific issue or fault with the transmission.
How to Locate Subaru Transmission Codes
To locate Subaru transmission codes, you need an OBD-II scanner or code reader. Follow these steps:
- Locate the diagnostic link connector (DLC) under the dashboard on the driver’s side.
- Connect the OBD-II scanner or code reader to the DLC.
- Turn on the ignition and start the engine.
- Follow the instructions on the scanner or code reader to retrieve the codes.
How to Interpret Subaru Transmission Codes
Once you have retrieved the codes, you need to interpret them to identify the specific issue with the transmission. Here are some common transmission codes and their meanings:
- P0700: Transmission Control System Malfunction
- P0776: Pressure Control Solenoid "B" Performance or Stuck Off
- P0746: Pressure Control Solenoid "A" Performance or Stuck Off
- P0741: Torque Converter Clutch Circuit Performance or Stuck Off
- P0731: Gear 1 Incorrect Ratio
- P0732: Gear 2 Incorrect Ratio
- P0733: Gear 3 Incorrect Ratio
It is essential to note that these codes may indicate a specific issue with the transmission or another related component. Therefore, it is necessary to conduct a thorough diagnosis to pinpoint the problem.
Troubleshooting Subaru Transmission Issues
After interpreting the codes, you need to troubleshoot the transmission issue, which could range from minor to major problems. Here are some common transmission issues and their possible causes:
- Hard or Delayed Shifting: Low transmission fluid, clogged transmission filter, faulty shift solenoid, or a faulty valve body.
- Transmission Slipping: Worn transmission bands, malfunctioning torque converter, low transmission fluid, or a faulty transmission pump.
- Transmission Noises: Faulty torque converter, damaged bearings, or a damaged planetary gear set.
- Overheating Transmission: Low transmission fluid, clogged transmission cooler, or a faulty transmission temperature sensor.
To troubleshoot these issues, you may need to seek the assistance of a professional mechanic, or you can conduct DIY repairs if you have the necessary skills and tools.
Resetting Subaru Transmission Codes
After making the necessary repairs, you need to reset the Subaru transmission codes to turn off the check engine light. Here are the steps to follow:
- Connect an OBD-II scanner or code reader to the DLC.
- Turn on the ignition and start the engine.
- Follow the instructions on the scanner or code reader to clear the codes.
Saving Money on Subaru Transmission Repairs
Knowing how to read Subaru transmission codes and troubleshoot the issues can save you a significant amount of money on repairs. Conducting DIY repairs or identifying the specific problem and seeking professional assistance can prevent costly repairs and extend the lifespan of your transmission. Regular transmission maintenance, such as replacing the transmission fluid and filter, checking the fluid level, and addressing issues promptly, can also save you money in the long run.
FAQ
What is the difference between the check engine light and transmission codes?
The check engine light indicates a broad range of issues with the car’s engine and transmission system. On the other hand, transmission codes provide specific information about transmission-related issues.
Can I read Subaru transmission codes without an OBD-II scanner or code reader?
No. You need an OBD-II scanner or code reader to retrieve and interpret Subaru transmission codes.
Can I conduct DIY repairs on my Subaru transmission?
It depends on the level of expertise and tools that you have. Some minor repairs, such as replacing the transmission filter or solenoids, can be done by DIY enthusiasts. However, major repairs require the expertise of a professional mechanic.
How can I prevent transmission issues in my Subaru?
Regular transmission maintenance, such as replacing the transmission fluid and filter, checking the fluid level, and addressing issues promptly, can prevent transmission issues and save you money in the long run.
In conclusion, knowing how to read Subaru transmission codes is an essential skill for any Subaru vehicle owner or service provider. It can save you money on costly repairs and extend the lifespan of your transmission. By following the steps in this guide, you can troubleshoot common transmission issues, reset the codes, and maintain your transmission to prevent further issues.
