How Do I Perform a Pre-Scan and Post-Scan?

Pre-scan and post-scan diagnostics help you verify that repairs were successful:

Pre-Scan

1. Connect to your vehicle and select your make
2. Use SmartVIN to identify the vehicle
3. Run a Quick Scan to read all modules
4. Save the report and clear all codes

Post-Scan

1. After completing repairs, drive the vehicle for at least 30 minutes
2. Run another Quick Scan
3. Any codes that return after clearing indicate an unresolved issue

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