To pinpoint the exact location, you'll need to:
1. Identify your engine code: This is usually found on a sticker on the engine itself or in your vehicle's documentation.
2. Consult a repair manual specific to your year and engine code: A repair manual (either physical or digital) will provide a diagram showing the exact location of the EGR valve and other components.
3. Search online forums: Searching online forums dedicated to Ford Focus diesel owners, specifying your year and engine code, may yield pictures or descriptions from other owners who have located their EGR valve.
Caution: Working on the EGR system often involves dealing with hot exhaust gasses and potentially messy fluids. Be careful and if you are not mechanically inclined, it's best to have a qualified mechanic perform any work on the EGR system.