The fuel tank pressure sensor is a vital part of the fuel pump build and is installed on top of the tank.
Fuel tank pressure sensor functionThe fuel tank pressure sensor is part of the evaporative emissions system also known as the EVAP. The sensor is important because it reads pressure in the fuel system to identify any leaks. The sensor is connected to the engine computer, so when it detects a leak the check engine light comes on.
Common issues with a faulty fuel tank pressure sensorA faulty fuel tank pressure sensor can cause poor fuel economy, stalling, and a decline in engine power.