The AutoLink A元09 OBDII Code Reader is specially developed for the US Market. Displays Diagnostic Trouble Code (DTC) and Pending Code definitions on unit screenĪutoLink A元09 OBDII Code Reader Overview.Turns off Check Engine Light (MIL), clears codes and resets emissions monitors.Retrieves generic (P0 and U0), manufacturer specific (P1, P3, and U1) codes, and pending codes.