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HO2S Heater Monitor Readiness Code: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 Honda S2000, 2004 Honda S2000, 2003 Honda S2000, 2002 Honda S2000, and 2001 Honda S2000. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect a scan tool or the HDS to the vehicle's data link connector (DLC). Bring up the tool's generic OBD II mode (scan tool only).
  2. Start the engine, and let it idle for 1 minute. The readiness code should switch from incomplete to complete.
  3. If the readiness code is still set to incomplete, check for a Temporary DTC. If there is no DTC, repeat the procedure.
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