Hyundai Elantra: Fuel Tank Pressure Sensor (FTPS). Description 
and Operation - Engine Control System - Fuel System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Fuel Tank Pressure Sensor (FTPS). Description and Operation

Description

Fuel Tank Pressure Sensor (FTPS) is a component of the evaporative emission control system and is installed on the fuel tank, the fuel pump, or the canister. It checks the purge control solenoid valve operation and detects a leakage of the system.