Fuel Tank Pressure Sensor

What is a Fuel Tank Pressure Sensor?

The fuel tank pressure sensor is part of your vehicle's fuel pump assembly or fuel tank and is used to detect pressure changes in the evaporative emissions (EVAP) system and fuel tank. Often mounted on the fuel tank, the fuel pressure sensor reads pressure levels in the fuel system to control and monitor the engine's fuel usage and detect evaporative leaks in the EVAP system. In some cases this may be as simple as a loose or faulty gas cap, but in any case, you may see a Check Engine light illuminate to alert you to a problem in the EVAP system. Reading the Check Engine light code can help you narrow down the source of the problem and determine if it's time to inspect or replace your fuel tank pressure sensor or other parts of the evaporative emissions system. If the fuel tank pressure sensor fails, you may notice hard starting, stalling, poor gas mileage, or poor acceleration due to EVAP system issues that affect the fuel ratio. The fuel tank pressure sensor is an important part of your vehicle's EVAP system, and any fuel system leaks should be addressed promptly as they can lead to excessive pollution and fuel loss. O'Reilly Auto Parts carries fuel tank pressure sensors for most applications. We also carry the gas cap, vapor canister, or other EVAP system parts you might need for your repair. For EVAP and fuel system resources, visit the O'Reily How-To-Hub for more information to help you complete your repair.