After head gasket replacement,i have a p0450 code.Im wondering why as it wasnt there before.This is a XK8 2000 Convertible.There is a pvc pipe at the side of the throttle body,im wondering maybe leaking.Its a push in type and lastly,does the FTP sensor connect to the intake via vacuum?I have looked at the components and it doesnt show circuit diag.Anyone have a wiring diag?

 

The DTC is referencing the electrical part of the Fuel Tank Pressure sensor so a leak is not going to flag this code. (P0442/P0455)

Look for an electrical connection problem. (wiring or sensor itself)

Was the engine harness main large black connector block disturbed during engine repair?

Gus has all the electrical guides on his site. (jagrepair.com)

 

Main harness wasnt disconnected just the usual sensors,cam,map,throttlebody etc.I shall look at the 5v signal see if its there then go to wiring.

 

Im not seeing the wiring for this FTP sensor/fuel pump to connector/ecm.Any idea who has a diag?Looked at gus page cant see it.

 

The FTP should be on the EVAPORATIVE FLANGE (tank top)

 

Ok wiring found and ecm pins.zero volts at ftp sensor.Continuity tests continue.Looks like bad wiring .