I have no idea how to use this website but I need HELPPPPPP

 changed my fuel temp sensor with a genuine FULL sensor and I’m still getting the code up,and my car takes ages to start also underboosting it’s anoying me where is the common break in the wires!

Did you clear the code after changing the sensor?!

 

Also, what car, age, engine etc 

 

In terms of using the site, the easiest way of searching for stuff, in my opinion, is typing what you want to search for in Google with “briskoda” at the end of it. Give it a go 👍

I've moved the thread to a better place @CallumH

Check fuses, check wiring next then. Open short circuit faults are often the sensor itself.