DTC Summary
WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. 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 | Memory |
|---|---|---|---|---|---|
| P1422 | 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 | DTC stored |
| P1423 | 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 | DTC stored |
| DTC No. | Monitoring Item | Detection Timing | Detection Logic |
|---|---|---|---|
| P1422 | Fuel tank small leak | While power switch is off | 2 trip |
| P1423 | Fuel tank gross leak |