2003 Honda S2000FACTORY OEM SERVICE PROCEDURE

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.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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