Catalytic Converter Monitor & Readiness Code: Procedure
- Connect the HDS or the scan tool to the vehicle's data link connector (DLC), and bring up the READINESS CODES for the catalyst in the DTCs menu.
- Start the engine.
- Test-drive the vehicle under stop-and-go conditions with short periods of steady cruise. After about 5 miles (8 km), the readiness code should switch from incomplete to complete.
- If the readiness code is still set to incomplete, check for a temporary DTC. If there is no DTC, one or more of the enable criteria were probably not met; repeat the procedure.