Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
Set Multimeter to Resistance Set meter to measure resistance
Remove connector X2 from the PCB
Remove connector from pressure sensor

Measurement:

Measure the resistance of each of the wires in the pressure
sensor harness as below:
Pin 11 on X2 to the black on the pressure sensor connector.
Pin 13 on X2 to the red on the pressure sensor connector.
Pin 14 on X2 to the green on the pressure sensor connector.
Expect continuity / zero resistance on each of the wires in the harness.
Also visually inspect the harness for good condition.
Are the resistances measured as expected and is
the harness in good condition?