New turbocharger Nissan Navara 2.5 DI Pathfinder 126kW/171PS

New turbocharger replacment Nissan Navara 2.5 DI YD25 R41 2500 ccm 144/171 HP Pathfinder 3 2.5 DI YD25 126kW/171PS 2.5 DDTi D40

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OE – JIC0216J 14411EC00B 14411EC00C 14411EC00E 14411-EC00B 14411-EC00C 14411-EC00E 14411EB70D 14411EB70C 14411EB70A

Turbocharger – Symptoms of Failure

Vehicles:

• Nissan Navara 2.5 DI / 2.5 dCi YD25 R51 – 2500 ccm, 144 HP / 171 HP
• Nissan Pathfinder 2.5 DI / 2.5 dCi YD25 – 126 kW / 171 PS
• Engine versions: 2.5 DDTi / dCi (D40 platform)

Engine: 2.5 YD25 (DDTi / dCi)
Turbo type: Variable Geometry Turbo (VNT)

The turbocharger used in Nissan Navara and Pathfinder 2.5 YD25 engines is designed for strong torque and towing capability. However, due to high mileage, heavy load use, EGR-related soot buildup, or oil contamination, turbocharger failure may occur.

Common Symptoms of Turbocharger Failure

1. Loss of Engine Power

• Weak acceleration
• Reduced boost pressure
• Poor performance under load or towing

2. Excessive Exhaust Smoke

• Blue smoke – oil leaking past turbo seals
• Black smoke – insufficient air supply or boost leak
• White smoke – oil entering exhaust housing

3. Unusual Noises

• High-pitched whistling or siren sound
• Grinding or metallic noise (bearing or shaft damage)

4. Increased Oil Consumption

• Frequent oil top-ups required
• Oil present in intercooler hoses

5. Boost Pressure Problems

• Underboost / overboost fault codes
• Engine warning light (check engine)
• Limp mode activation

6. Variable Geometry (VNT) Issues

• Sticking vanes due to carbon buildup
• Delayed turbo spool
• Irregular boost response

7. Excessive Shaft Play

• Noticeable radial or axial movement
• Risk of turbine or compressor wheel contact with housing

Common Causes

• Poor oil quality or extended oil change intervals
• Blocked oil feed or return lines
• Carbon buildup from EGR system
• Overheating
• Heavy towing or off-road operation

Recommendation

If your Nissan Navara D40 or Pathfinder R51 2.5 YD25 (144–171 HP) shows any of these symptoms, immediate inspection of the turbocharger and lubrication system is recommended. Driving with a failing turbo can lead to serious engine damage or complete turbo failure.