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Honda OBD II Emission Monitor Status Readiness Code Checking Using the Instrument Cluster

Confirming passed / Not Passed Status of Emission Monitors

Honda vehicles II can display OBD II emission monitor status (complete or incomplete) using the instrument cluster malfunction indicator lamp MIL.

This is a quick way to confirm all emission monitors have passed or have yet to pass. Also referred to as complete or incomplete emission monitors or readiness codes.

Beginning with the ignition OFF, Turn ignition ON with the engine OFF

The MIL will illuminate and remain ON steady for 20 seconds if all monitors are complete

If one or more monitors are incomplete, the MIL will turn ON steady for 20 seconds and blink five times

To determine which monitors are incomplete, connect an OBD II scan tool and check monitor status