Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2008CIVIC SI, 4D SEDANREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 88 (FUEL SYSTEM & EMISSIONS SYSTEM (R18A1 ENGINE))HOW TO SET READINESS CODESEVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM MONITOR AND READINESS CODEPROCEDURE
2008 Honda Civic Si, 4D Sedan
Evaporative Emission (EVAP) Control System Monitor and Readiness Code: Procedure
2008 Honda Civic Si, 4D SedanSECTION Procedure
WARNING: This page is about a different variant/trim than selected.
- Connect the HDS to the DLC.
- Start the engine.
- Select EVAP TEST in the INSPECTION MENU with the HDS, then select the FUNCTION TEST in the EVAP TEST MENU.
- If the result is normal, readiness is complete.
- If the result is not normal, go to the next step.
- Check for a Pending DTC. If there is no DTC, one or more of the enable criteria were probably not met; repeat the procedure.
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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.