OBD Can Code Reader OBD-A422 FUNCTIONS: Displays the DTC definitions on screen Wide coverage works with CAN-equipped vehicles Reads and clears all generic, and some manufacturer, specific DTC's Resets check engine lights Displays I/M readiness status Views OBD II freeze frame data Retrieves the Vehicle Identification Number (VIN) Determines the malfunction indicator lamp (MIL) status Hot keys for quick read and release Hand held and easy to use with one plug-in only Highly reliable and accurate Safely communicates with the onboard computer No batteries needed for operation -powered via detachable OBD2 cable Battery compartment for off-vehicle reviewing or for when upgrading from a PC