2007 Ford Ranger 3.0 TDCi Starts runs fine then shuts down when heated up with code P0642

Question

Replaced Fuel Temperature Sensor but same code. Starts again after an hour. Crank sensor maybe?
P0642 code is vague. " Any component of the car is faulty "

Answer 1

P0642 code is vague

I agree, the P0642 code doesn't specify which component is at fault. Unfortunately, I do not have the factory service manual for your vehicle, but in most vehicles, the same circuit powers 3-7 components. Once you know which components the circuit is connected to, disconnect each component, and check the circuit between the component and the PCM or replace the component. 

Since I don't have the factory service manual for your vehicle, I can't recommend which component to check.

This video can give you an idea how to diagnose the problem: