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Nissan V9X engine: known problems
Used in 2 guides · diesel · 5 known problems
Layout
V6 turbo
Fuel
diesel
Known problems5
Everything our guides list for the variants with this engine: the engine itself plus the gearbox and ancillaries it's paired with. Each shows which cars it's listed for.
High
Auto transmission / radiator coolant cross-contamination
The 7-speed auto, like the rest of the range, can suffer coolant/ATF cross-contamination from a radiator cooler failure - very costly on this gearbox.
Fix: Fit/verify an external trans cooler; inspect fluid pre-purchase; rebuild/replace if contaminated.
Listed for: Nissan Pathfinder R51
Medium
EGR cooler failures
EGR cooler internal failures on the V9X are documented.
Fix: EGR cooler replacement. Delete kits exist but legal status varies.
Listed for: Nissan Navara D40
Medium
Specialist scarcity
V9X is shared with Renault Master vans but few Australian specialists work on it regularly.
Fix: Find a Renault-experienced diesel specialist before committing to the V6.
Listed for: Nissan Navara D40
Medium
Injector and turbo wear (high repair cost)
The V9X common-rail injectors and turbo are durable but expensive; faults cause rough running, smoke, hard starting or boost issues, and parts/labour are dearer than the four-cylinder.
Fix: Diesel-specialist injector test/replacement and turbo service; use quality fuel and filtration.
Listed for: Nissan Pathfinder R51
Medium
EGR / intake soot and emissions faults
EGR and intake carbon build-up cause rough running and limp mode; emissions sensors/valves are a common fault source on this engine.
Fix: EGR/intake clean, replace faulty sensors/valves; regular highway running.
Listed for: Nissan Pathfinder R51
Cars with the V9X2
From the FlamingCars guides for these cars. Specs are shown only where the guides agree and the value is verified.