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When using a scan tool

  1. Connect a scan tool to the vehicle's data link connector (DLC), and bring up the tool's generic OBD II mode.
  2. Start the engine.
  3. 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.
  4. 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.


  1. Connect a scan tool to the vehicle's data link connector (DLC), and bring up the tool's generic OBD II mode.
  2. Start the engine.
  3. Test-drive the vehicle under stop-and-go conditions with short periods of steady cruise. After about 2.5 miles (4.0 km), the readiness code should switch from incomplete to complete.
  4. 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.


  1. Connect a scan tool to the vehicle's data link connector (DLC), and bring up the tool's generic OBD II mode.
  2. Start the engine.
  3. Test-drive the vehicle under stop-and-go conditions with short periods of steady cruise. During the drive, decelerate (with the throttle fully closed) for 5 seconds. After about 3.5 miles (5.6 km), the readiness code should switch from incomplete to complete.
  4. If the readiness code is still set to incomplete, check for a Temporary DTC. If there is no DTC, the enable criteria was probably not met; repeat the procedure.
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