DTC P1235: High Pressure Fuel Pump Circuit: Description
WARNING: This page is about a different car, the 2009 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
The high pressure side fuel pump is attached to the insulator, which is attached to the cylinder head cover. The pump activates according to the position of the cam on the exhaust side camshaft (right bank).
The high pressure side fuel pump increases the pressure of the fuel supplied from the fuel pump in the fuel tank to 4 to 13 MPa (40.8 to 132.6 kgf/cm, 580 to 1885 psi) according to the operating condition, and it feeds the fuel to the fuel delivery pipe.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P1235 | Open or short in high pressure side fuel pump circuit for 1 second or more (1 trip detection logic) |
|