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0445110239 — Symptoms & Failure Modes

Common symptoms and verified failure modes of a failing Bosch 0445110239 1.6 HDi / TDCi (DV6) Common Rail Injector.

Misfiring and idling vibration · high

A worn or leaking injector under/over-fuels its cylinder, causing a rough, vibrating idle.

Starting problems / hard cold start · high

Back-leakage lowers cranking rail pressure on the DV6.

Black smoke · medium

Poor atomisation from a worn nozzle or ball-seat erosion.

Poor performance / loss of power · medium

Out-of-range injector delivery triggers reduced performance or limp mode.

Check-engine light (MIL) · medium

Cylinder-specific injector or rail-pressure fault codes.

Increased fuel consumption · medium

Over-fuelling or leakage wastes fuel.

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