Scantool Diagnostics
Engine Control
P0457 Evaporative Emission System-Leak detected(tank cap loose/off) - Scantool Diagnostics
Monitor GDS Data
Evap. Leakage Test
1. Cool the vehicle down for about two hours to prevent misdiagnosis.
2. Install GDS and IG "ON" and then clear DTC.
3. Select and press "EVAP.LEAKAGE TEST" mode in the GDS.
4. Check if the vehicle is under test conditions as below.
5. Is the same DTC set after the Evap.leakage test with GDS ?