DTC Summary
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P1422-00 | Evaporative Emission Fuel Tank (Small Leak) | Leak detection pump creates negative pressure (vacuum) in fuel tank and fuel tank pressure is measured. Reference pressure is measured at the start and at end of leak check. If stabilized pressure is higher than third reference pressure, ECM determines that fuel tank has a small leak. |
|
Comes on | Engine | B |
|
| P1423-00 | Evaporative Emission Fuel Tank (Gross Leak) | Leak detection pump creates negative pressure (vacuum) in fuel tank and fuel tank pressure is measured. Reference pressure is measured at the start and at end of leak check. If stabilized pressure is higher than [third reference pressure x 0.2], ECM determines that fuel tank has a large leak. |
|
Comes on | Engine | B |
|
| DTC No. | Monitoring Item | Detection Timing | Detection Logic | SAE Code |
|---|---|---|---|---|
| P1422-00 | Small leak from fuel tank | EVAP monitoring (ignition switch off) |
2 trip | P1422 |
| P1423-00 | Gross leak from fuel tank | P1423 |