DTC P0446: EVAP Control System Vent Control Malfunction: Condition
DTC is set when excessive fuel tank pressure or a vent control malfunction in evaporative emission control system is present. Possible causes are:
- Fuel Tank Pressure (FTP) sensor malfunction.
- Fuel vapor hose blockage.
- Open in wire harness.
- Canister vent restriction.
- Damaged canister vent side filter.
- Canister Drain Cut Valve (CDCV) malfunction.
- PCM malfunction.