Nissan U1025-00 -

This is a communication-based Diagnostic Trouble Code (DTC) where the Engine Control Module (ECM) loses contact with the electronic turbocharger actuator. Primary Symptoms

In Nissan vehicles, specifically those equipped with the diesel engine (found in the Navara D40 , Pathfinder R51 , and NP300 ), the fault code U1025-00 indicates a Turbocharger Boost Communication Line failure. nissan u1025-00

The MIL (Malfunction Indicator Lamp) will typically illuminate, though it may occasionally be intermittent. This is a communication-based Diagnostic Trouble Code (DTC)

Owners have reported fluctuating idle and increased engine noise when the actuator fails to position correctly. Common Causes and NP300 )

The engine may bog down or refuse to rev beyond 2,000 RPM.

When this code triggers, the vehicle usually enters a "Limp Home" mode to protect the engine. Common symptoms include: