p0453 evaporative emission control system pressure sensor high input
Chevy s-10 Bazer. I have a code P0453 evap high pressure. Vehcicle very difficult to start after sitting for several hours. Will start again if sitting for a short time. Has a new fuel pump, regulator and fuel filter. How do I correct this code? Will this correct the problem starting?
Evaporative Emissions Control System Pressure Sensor High Input
The EVAP (Evaporative Emissions) System allows fuel tank vapors to be purged into the engine and burnt rather than expelled into the atmosphere as harmful emissions. The EVAP system contains a pressure sensor to check the integrity of the system. Periodically, the EVAP system performs a pressure test to check that there are no leaks in the system. It uses this sensor, also known as a fuel tank pressure (FTP) sensor to check for leaks. Basically P0453 means the PCM (Powertrain Control Module) noticed the EVAP Pressure sensor or FTP is indicating a higher than normal pressure (above 4.5 Volts) in the EVAP system. NOTE: On some vehicles the FTP is a part of the fuel pump assembly in the tank.
This will help.