✓ The faults of this engine were checked against sources (10/2026). Each item has at least two independent sources or an official recall or parts-maker technical note.
Injector faults (worn, leaking back or sticking injectors)
usually 150,000–250,000 km · Medium risk
Signs: Hard starting, rough idle or misfire, smoke, knocking, injector fault codes; fuel in the oil in bad cases
Fix: Read injector corrections and do a return-flow test; repair or replace only the faulty injectors and code them to the ECU
€250–1,600
EGR valve sooting
usually 100,000–220,000 km · Medium risk
Signs: Power loss or limp mode, black smoke, rough running, EGR fault codes; worse with short trips
Fix: Clean or replace the EGR valve; cleaning usually helps only for a while
€150–600
Turbo boost faults: vacuum solenoid, actuator or sticking VGT vanes
usually 120,000–250,000 km · Medium risk
Signs: Limp mode under load, overboost or underboost codes, surging power, whistling
Fix: Check vacuum hoses, the boost-control solenoid and the boost sensor first; clean or rebuild the turbo if the vanes stick
€100–1,300
DPF clogging; additive (Eolys) runs low (additive systems)
usually 80,000–200,000 km · Medium risk
Signs: DPF or additive-level warning, limp mode after long periods of city driving
Fix: Refill the additive and reset the counter, check the pressure sensor, force a regeneration; clean or replace the DPF if it is full
€100–1,500
High-pressure pump: pressure regulator valve fails (power loss)
usually 120,000–300,000 km · Medium risk
model years 1998–2010 only
Signs: Hard starting, uneven running, power loss or limp mode, rail pressure fault codes, smoke
Fix: Check rail pressure in live data and the fuel filter; replace the pressure regulator valve, or the pump only if it is worn
€100–800
Hydraulic lifters tick on cold start (high mileage)
usually 150,000–300,000 km · Wear part
Signs: Ticking from the top of the engine after a cold start that fades after a few minutes
Fix: Use the correct oil and shorter change intervals; if it persists, replace the lifters (camshafts must come out)
€300–750