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 MANUALSHONDA2009S2000 BASEREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISEVAP SYSTEMDTC TROUBLESHOOTINGDTC P0496: EVAP SYSTEM HIGH PURGE FLOW
2009 Honda S2000 Base
DTC P0496: EVAP System High Purge Flow
2009 Honda S2000 BaseSECTION DTC P0496: EVAP System High Purge Flow
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION
).
- Turn the ignition switch ON (II).
- Clear the DTC with the HDS.
- Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Is the result OK?
- YES - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the FTP sensor, the EVAP canister purge valve, or the EVAP canister vent shut valve and the ECM.
- NO - Go to step 4.
- Turn the ignition switch OFF.
- Replace the EVAP canister purge valve (see FTP SENSOR REPLACEMENT ).
- Turn the ignition switch ON (II).
- Reset the ECM with the HDS.
- Do ECM IDLE LEARN PROCEDURE .
- Do the EVAP FUNCTION TEST in the INSPECTION MENU with the HDS.
Is the result OK?
- YES - Troubleshooting is complete.
- NO - Check for poor connections or loose terminals at the FTP sensor, the EVAP canister purge valve, or the EVAP canister vent shut valve and the ECM, then go to step 1.
RENDER: 1.0x
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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.