Airtex FTPS2 Fuel Tank Pressure Sensor Fuel tank pressure sensor reads pressure (both positive and negative) inside the fuel tank and transmits the information to the engine control computer When not replaced, vehicle may experience failed emissions test and/or CEL illumination Designed to meet or exceed OE specifications in fit, form and function Evaporative emission control system diagnosis can be difficult and trouble codes can be triggered by sensors and components other than the fuel tank pressure sensor Limited 1 Year Warranty