Typical Malfunction Thresholds

EVAP canister purge valve stuck open:

-

EVAP pressure when vacuum introduction is complete

Higher than reference pressure x 0.2

EVAP canister purge valve stuck closed:

-

EVAP pressure change after EVAP canister purge valve is open

Less than 0.3 kPa-g (2.25 mmHg-g)

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Do It Yourself Car Diagnosis

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