Honda Civic Service Manual: Engine Control

Internal Combustion Powertrain Control

...

How to Set Readiness Codes (KA KC KL models K24Z7)

Malfunction Indicator Lamp (MIL) Indication (In relation to Readiness Codes) The vehicle has certain readiness codes that are part of the on-board diagnostics for the emissions systems. If the vehi ...

See also:

Honda Civic Owners Manual. Immobilizer System
The immobilizer system prevents a key that has not been pre-registered from starting the engine. Each key contains electronic transmitters that use electronic signals to verify the key. Pay attention to the following when inserting the key into the ignition switch or pressing the ENGINE ST ...