Where is the evaporative emission system pressure sensor?
This sensor is typically found on top of or inside of the fuel tank. Fuel vapors are stored inside the EVAP canister. The PCM controls the purge control valve which opens to allow those vapors to be pulled into the engine and burned.
How does the PCM control the EVAP system?
The PCM electronically controls the purge control valve/solenoid which is the heart of the EVAP system. EVAP system/fuel tank pressure is monitored by the PCM using the EVAP pressure sensor. Located in the fuel tank and integrated into the fuel pump/fuel level sending unit housing, the EVAP pressure sensor can be quite challenging to access.
How does the EVAP system check for leaks?
The EVAP system comes with a pressure sensor that regularly checks the integrity of the system. The EVAP system tests the pressure sensor from time to time to make sure there are no leaks in the system. It utilizes the sensor known as FTP (fuel tank pressure) sensor to look for leaks.
How does the fuel tank EVAP system work?
The fuel tank pressure sensor or EVAP pressure sensor measures the pressure (and therefore, the vacuum) in the fuel tank. These components connect the various parts of the EVAP system. How Does an EVAP System Work?
What is p2402 evaporative emission control system?
OBD-II Code P2402 is defined as a Evaporative Emission System Leak Detection Pump Control Circuit . The Leak Detection Pump is part of the Evaporative Emissions System. After the vehicle has been sitting for a few hours, this pump will turn on and create a vacuum in the EVAP system. The engine computer (PCM) runs this test when the vehicle is off.
How does the evaporative emissions system work?
The evaporative emission (EVAP) control system limits the fuel vapors from escaping into the atmosphere. The EVAP transfers the fuel vapors from the sealed fuel tank to an activated carbon storage device, the EVAP canister. The EVAP canister stores the vapors until the engine is able to use the extra fuel vapor.
What is the function of evaporative emission canister?
What is the function of Evaporative Emission Canister. The evaporative emission (EVAP) canister is a storage device for fuel vapors that are emitted by the fuel tank in hot soak conditions. When the vehicle is at normal operating conditions, the vapors are purged from the canister. The EVAP canister is controlled by the evaporative emission (EVAP) canister purge valve.
Where is the EVAP emission canister?
The EVAP emissions control canister is located on the driver side, near the rear tires . Jack up the vehicle from the recommended jack placement and place the rear of the vehicle on jack stands for support. Make sure to keep pressure on the jack after lowering the vehicle onto the jack stands for extra safety.