Circuit Description
WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.
Based on input signals from heated oxygen sensor and purge flow switching valve Vacuum Switching Valve (VSV), the ECM determines if a fuel leak exists inside the fuel tank. DTC is set when purge flow switching valve VSV is on and vapor density of air flowing from EVAP VSV into the intake manifold is high. Possible causes are:
- Defective fuel tank.
- Defective ECM.