DCRI200420 — Symptoms & Failure Modes
Common symptoms and verified failure modes of a failing Denso DCRI200420 2.2 D-4D / D-CAT (2AD-FHV/2AD-FTV) Common Rail Injector (Toyota RAV4 / Avensis / Verso).
Rough idle / vibration · high
A leaking injector unbalances cylinder fuelling on the 2.2 D-4D.
Hard starting · high
Excess back-leakage drops cranking rail pressure.
Loss of power / limp mode · high
Out-of-range delivery or rail-pressure deviation cuts power.
Black smoke · medium
Poor atomisation over-fuels the cylinder.
Engine management light · medium
Cylinder-specific injector or fuel-metering codes.