DTC P0496: EVAP System - Flow During Non-Purge: Condition
WARNING: This page is about a different car, the 2003 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0496 is set when with engine running fuel tank internal pressure is lower than specification even after both EVAP Canister Purge Valve (EVAP-CPV) and EVAP Canister Vent Valve (EVAP-CVV) are closed. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.