ATDIAG V321 OBD2 Scanner

We are no longer standing behind this price. It was checked when posted, more than 14 days ago, and we have not re-checked it since. It may still be on; we cannot say so. See what is current →

ATDIAG US via Amazon has ATDIAG V321 OBD2 Scanner on sale for $39.99 - 40% when you clip the coupon on the product page = $23.99. Free delivery for Prime members.

Posted August 7, 2026. Price and availability are whatever the retailer says right now.

• Reads and clears check engine codes, runs EVAP tests, checks battery health, and shows freeze frame data
• Built-in library decodes over 35,901 fault codes
• Works with most gas vehicles made after 1996 (US) with a standard 16-pin OBD2 port
• 2.4-inch color screen, tri-color status lights, and keyboard shortcuts for quick access to reports
• Rated for -22°F to 158°F with a rugged silicone case and 3-foot heat-resistant cable

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