1
Autel AutoLink AL319 OBD2 Code Reader
Reads and clears engine codes, shows live data and freeze frame, and checks emissions readiness. It powers from the port, so it lives in the glovebox.
Estimated retail value $59.00 As of Oct 25, 2026
OBD2 Scan Tools for a Modern Engine Swap, at Three Budgets
A swap that keeps its factory engine computer keeps its OBD2 port, and when a check-engine light comes on in a fifty-year-old body, the stored code is the shortest way to the fault. These three Autel tools read that port at three levels: a pocket code reader for the engine alone, a four-system scanner that also reaches the transmission, ABS and airbag modules a swap may bring along, and a bidirectional tablet that can test components as well as read them.
Entry
Mid-range
2
Autel MaxiLink ML629 OBD2 Scanner
Adds transmission, ABS and airbag codes to the engine's, with live data graphed, for a build that carried a modern transmission controller or ABS over with the swap.
Estimated retail value $114.00 As of Oct 25, 2026
Splurge
3
Autel MaxiCheck MX900 Bidirectional Scan Tool
A bidirectional scan tool: it sends commands to the car's modules, so a part can be tested from the scanner instead of only read about.
Estimated retail value $559.00 As of Oct 25, 2026
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Where these picks come from: AUTELOnline