DTC P1235 High Pressure Fuel Pump Circuit; DTC P1236 High Pressure Fuel Pump No. 2 Circuit: Description
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
The fuel pump for high pressure 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 intake side camshaft (bank 1 and bank 2) The fuel pump for high pressure 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/cm2 , 580 to 1885 psi) according to the operating condition, and it feeds the fuel to the fuel delivery pipe.
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P1235 | Open or short in fuel pump for high pressure (bank 1) circuit for 1 second or more (1 trip detection logic) |
|
| P1236 | Open or short in fuel pump for high pressure (bank 2) circuit for 1 second or more (1 trip detection logic) |
|