Ford · 2008–2025
Common Ford Focus problems, and how to check them
These are the 5 faults owners and garages report most often on the Ford Focus, from the most common down. For each one: what goes wrong, how to check it yourself, and the usual fix, so you know what you’re dealing with before you buy parts.
Fact-checked by a licensed car technician · last reviewed 27 September 2026
Problem 1
Ford Focus: Coolant loss and overheating on the 1.0 EcoBoost
What goes wrong
Early engines (built October 2011 to October 2013) had a plastic coolant hose that could fail when hot; later engines lose coolant through leaking hoses, the header tank, or a degas bottle cap. Driving on after overheating can crack the cylinder head.
How to check it yourself
Check the coolant level weekly with the engine cold and look for leaks at the hoses and header tank. Ask a Ford dealer whether the coolant-hose recall (or the engine-temperature software update) was done. Coolant loss without a visible leak needs a combustion-gas (block) test.
The usual fix
Replace the leaking hose, tank, or cap and bleed the system. Stop driving at once if the temperature warning appears: overheating on this engine can cause cylinder-head damage.
Signs: Coolant loss, Engine overheating, Check engine light
Fault codes: P0217, P0118, P1299
Problem 2
Ford Focus: PowerShift gearbox judder, hesitation, or loss of drive
What goes wrong
The dry dual clutches and the transmission control module (TCM) fail, especially in stop-start driving; leaking input-shaft seals contaminate the clutches with oil.
How to check it yourself
Read the transmission control module for clutch and TCM codes; note judder when pulling away and lurching between gears. Ask a Ford dealer about extended warranty or software updates.
The usual fix
Clutch adaptation and software update first; judder from oil-contaminated clutches needs new clutches and seals; TCM faults need a replacement module.
Signs: Harsh shifting, Transmission slipping
Fault codes: P0700, P0900, P2711
Problem 3
Ford Focus: Blocked EGR valve or DPF
What goes wrong
Soot from short trips clogs the EGR valve and particulate filter.
How to check it yourself
Read codes and live data for EGR position and DPF soot load.
The usual fix
Clean or replace the EGR valve; regenerate or clean the DPF.
Signs: Loss of power, Check engine light
Fault codes: P0401, P0402, P2002, P2463
Problem 4
Ford Focus: Leaking injector seals: chuffing and exhaust smell
What goes wrong
The copper sealing washers under the injectors leak combustion gas, which cakes carbon around the injectors and can block the turbo oil feed.
How to check it yourself
Listen for a chuffing sound at the top of the engine and look for black tar-like carbon around the injectors.
The usual fix
Remove the injectors, clean the seats, and fit new washers and clamp bolts. Fix it early: the carbon can starve the turbo of oil.
Signs: Rough idle, Hard starting, Black smoke
Problem 5
Ford Focus: Worn timing belt in oil on the 1.0 EcoBoost
What goes wrong
The timing belt runs in engine oil and degrades early with the wrong oil or long service intervals; debris can block the oil pump strainer.
How to check it yourself
A garage inspects the belt through the oil filler or timing cover for cracks, fibres, or swelling, and checks oil pressure. Check the service history for the correct Ford-specification oil.
The usual fix
Replace the timing belt, tensioner, and oil pump strainer at or before the interval (often about 10 years or 150,000 km, sooner if worn), and use the specified oil.
Signs: Check engine light, Loss of power, Hard starting
Fault codes: P0016, P0011, P0014, P0524
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer