0445115079 — Symptoms & Failure Modes
Common symptoms and verified failure modes of a failing Bosch 0445115079 3.0 V6 TDI (ASB/BKN/BMK) Common Rail Injector.
High back-leakage from a worn piezo injector drops cranking rail pressure on the 3.0 V6 TDI, making the engine slow to start, especially when cold.
An out-of-balance injector unevenly fuels its cylinder, producing a shaky idle and audible misfire on the V6.
When injector delivery falls outside its correction range the ECU pulls timing and boost or drops the engine into limp mode.
Poor atomisation from a worn piezo nozzle over-fuels the cylinder, producing visible smoke under load.
A leaking injector causes a pronounced top-end knock on the 3.0 V6 TDI, often most obvious at idle.
Internal leakage and over-fuelling waste fuel and can trigger fuelling-related fault codes.