Malfunction Threshold
Either of these conditions occurs:
When the fuel tank internal pressure is not near the barometric pressure.
| Leak check pressure sensor at the time of the decompression | Malfunction judgment | DTC | |||
| Canister decompression | Judgment 1 | Judgment 2 | Judgment 3 | ||
| Reference pressure more than canister decompression | Normal | Normal | Normal | - | |
| Reference pressure is less than canister decompression | Normal | Failure | Normal | P04EF | |
When the fuel tank internal pressure is near the barometric pressure.
| Leak check pressure sensor at the time of the decompression | Malfunction judgment | DTC | |||
| System total decompression | Canister decompression | Judgment 1 | Judgment 2 | Judgment 3 | |
| Reference pressure more than system total decompression | Fuel tank internal pressure is no change | Normal | Normal | Normal | - |
| Fuel tank internal pressure is change | Normal | Normal | Failure | P2450 | |
| Reference pressure is less than system total decompression | Reference pressure more than canister decompression | Failure | Normal | Pending | P04EE |
| Reference pressure is less than canister decompression | Pending | Failure | Pending | P04EF | |