System Inspection

Engine Control
P0457 Evaporative Emission System-Leak detected(tank cap loose/off) - Inspection/Repair:_:System Inspection

System Inspection

Check Fuel Filler Cap
1. Check the Fuel Filler Cap is installed and properly tightened.
2. Check if the Fuel Filler Cap seal is missing or damaged.
3. Is the Fuel Filler Cap OK?





Check vapor hoses for leakage in fuel system
1. Check vapor hoses between the following components for leakage:
> Intake manifoled ~ Purge control solenoid valve (PCSV)
> Purge control solenoid valve (PCSV) ~ Canister
> Canister ~ Canister close valve (CCV)
> Canister ~ fuel tank
2. Does a leak exist?





Check fuel filler pipe for crack or leakage
1. Check that there is crack or leakage in fuel filler pipe
2. Is there any crack or leakage ?






Component Inspection

Check CCV for leakage
1. Disconnect the hose leading from the CCV to Canister at CCV.
2. Visually Check any tear of the hose leading from the CCV to Canister
3. When the CCV operates, apply a vacuum at the nipple and verify that the CCV holds vacuum.
4. Does a leak exist?





Check vapor hoses for leakage in fuel system
1. Disconnect the hose leading from the CCV to Canister at Canister.
2. When the other nipples are plugged, apply a vacuum at the vent nipple and verify that the Canister holds vacuum.
3. Does a leak exist?





Check fuel tank for leakage
1. Check fuel tank for crack or leakage.
2. Does a leak exist?