DTC P109C: Open in Fuel Pressure Switching Valve Circuit; DTC P109D: Short in Fuel Pressure Switching Valve Circuit [08/2017 - 08/2018]: Description
WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
A Flexible Fuel Vehicle (FFV) can be used with a fuel containing a high concentration of ethyl alcohol.
This FFV uses a fuel pressure switching system which changes the fuel pressure to low or high using a fuel pressure switching valve.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P109C | The fuel pressure switching valve relay circuit is open or shorted to ground. (1 trip detection logic) |
|
| P109D | The fuel pressure switching valve relay circuit is shorted to the power supply. (1 trip detection logic) |
|