Subaru vehicles are equipped with an onboard diagnostics system that monitors the performance of various components and systems. When the system detects a problem, it triggers a fault code and illuminates the check engine light. Clearing these fault codes is essential for diagnosing and addressing the underlying issues. In this guide, we’ll walk you through the steps to clear Subaru fault codes.
Understanding Subaru Fault Codes
Before you dive into clearing the fault codes, it’s important to understand what they mean. Fault codes, also known as diagnostic trouble codes (DTCs), are alphanumeric codes that correspond to specific issues within the vehicle’s systems. These codes can range from simple malfunctions to more complex problems. To properly diagnose and address the issues, it’s crucial to clear the fault codes and monitor if they reappear.
Using an OBD-II Scanner
The most efficient way to clear Subaru fault codes is by using an onboard diagnostics (OBD-II) scanner. These handheld devices are readily available and are designed to interface with the vehicle’s onboard diagnostics system. Here’s how you can use an OBD-II scanner to clear fault codes:
Step 1: Locate The Obd-ii Port
The OBD-II port is typically located beneath the dashboard on the driver’s side of the vehicle. It may be concealed by a plastic cover that can be easily removed to reveal the port. Once you’ve located the port, plug in the OBD-II scanner.
Step 2: Access The Fault Codes
Once the scanner is connected, power it on and select the option to “read fault codes” or “scan for codes.” The scanner will communicate with the vehicle’s onboard diagnostics system and retrieve any stored fault codes. Take note of the codes displayed on the screen before proceeding to clear them.
Step 3: Clear The Fault Codes
After noting down the fault codes, select the option to “clear fault codes” on the scanner. The device will send a command to the vehicle’s onboard diagnostics system to erase the stored fault codes. It’s important to ensure that the underlying issues have been addressed before clearing the codes, as they may reappear if the problem persists.
Step 4: Monitor For Recurring Codes
Once the fault codes have been cleared, it’s crucial to monitor the vehicle for any recurring issues. Take the vehicle for a test drive and observe if the check engine light illuminates or if any new fault codes are triggered. If the light stays off and no new codes appear, the clearing process was successful.
Manual Clearing Method
If an OBD-II scanner is not readily available, you can also clear Subaru fault codes manually. However, this method may vary depending on the specific Subaru model and year. Here’s a general overview of the manual clearing process:
Step 1: Locate The Diagnostic Connector
Similar to using an OBD-II scanner, you’ll need to locate the diagnostic connector in the vehicle, which is typically located under the dashboard on the driver’s side. Refer to the vehicle’s manual or consult a Subaru technician for the exact location.
Step 2: Ground The Diagnostic Terminal
Once you’ve located the diagnostic connector, you’ll need to ground the diagnostic terminal using a jumper wire or a paperclip. This step may require referring to the vehicle’s manual or seeking assistance from a Subaru expert to ensure the correct terminal is grounded.
Step 3: Turn The Ignition On
With the diagnostic terminal grounded, turn the ignition key to the “on” position without starting the engine. This will initiate the clearing process for the fault codes stored in the vehicle’s onboard diagnostics system.
Step 4: Watch For System Light Patterns
While the ignition is on, observe the system lights on the dashboard. The check engine light may blink in a specific pattern, signaling that the fault codes are being cleared. Refer to the vehicle’s manual or seek guidance from a Subaru specialist to interpret the light patterns accurately.
Step 5: Verify Code Clearance
Once the clearing process is complete, turn off the ignition and remove the jumper wire or paperclip from the diagnostic terminal. Turn the ignition back on and verify if the check engine light remains off, indicating that the fault codes have been successfully cleared.
Common Mistakes to Avoid
When clearing Subaru fault codes, it’s important to exercise caution and avoid common mistakes that could potentially cause further issues. Here are some key points to keep in mind:
- Do not clear fault codes without diagnosing the underlying issues first, as they may reappear if the problems persist.
- Ensure that the vehicle’s battery is in good condition and properly connected before clearing fault codes, as disconnecting the battery may reset other vehicle systems.
- Refer to the vehicle’s manual or seek assistance from a qualified Subaru technician if you’re unsure about the clearing process, as different models may have specific procedures.
Frequently Asked Questions Of How To Clear Subaru Fault Codes: Easy Step-by-step Guide
What Are Subaru Fault Codes?
Subaru fault codes are diagnostic trouble codes that indicate issues in the vehicle’s systems.
Why Should I Clear Subaru Fault Codes?
Clearing Subaru fault codes can help reset the system, identify ongoing issues, and improve vehicle performance.
How Can I Clear Subaru Fault Codes?
You can clear Subaru fault codes using an OBD-II scanner or by disconnecting the battery for a few minutes.
Is It Safe To Clear Subaru Fault Codes?
Yes, it is safe to clear Subaru fault codes as it resets the system for better performance and diagnostics.
Conclusion
Clearing Subaru fault codes is an essential step in diagnosing and addressing issues within the vehicle’s systems. Whether using an OBD-II scanner or employing the manual clearing method, it’s crucial to follow the correct procedures and ensure that the underlying problems are addressed before clearing the fault codes. By understanding the steps involved and avoiding common mistakes, you can effectively reset the fault codes and monitor the vehicle’s performance for any recurrent issues.