Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
P1422: FUEL TANK SMALL LEAK
| Fuel tank pressure when vacuum introduction for fuel tank was complete | Between conditions 1 and 2 |
| Condition 1 | Higher than third reference pressure |
| Condition 2 | Lower than [third reference pressure x 0.2] |
P1423: FUEL TANK GROSS LEAK
| Fuel tank pressure when vacuum introduction for fuel tank was complete | Higher than [third reference pressure x 0.2] |