FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Scantool Diagnostics





P0456 Evaporative Emission System-Leak detected (very small leak)

Scantool Diagnostics

Monitor Scantool Data

Evap. Leakage Test
1. Cool the vehicle down for about two hours to prevent misdiagnosis.
2. Install scan tool and IG "ON" and then clear DTC.
3. Select and press "EVAP. LEAKAGE TEST" mode in the scan tool.
4. Check if the vehicle is under test conditions as below.








5. Is the same DTC set after the Evap. leakage test with scan tool?