How do you change code p0496 on suzuki xl7?

You cannot change a code. You can remove the code from the ECU by repairing the problem and resetting the ECU. Code PO496 means the ECM has detected pressure in the EVAO system during a non-purge condition

1. Purge or vent solenoid failure

2. Plugged EVAP canister condition

3. Failed EVAP pressure sensor