1. Fuel System Issues:
- Clogged Fuel Filter: A dirty or clogged fuel filter can restrict fuel flow to the engine, causing it to stall.
- Faulty Fuel Pump: A failing fuel pump may not provide enough fuel pressure, resulting in engine cutoff.
2. Ignition System Problems:
- Faulty Spark Plugs: Worn or damaged spark plugs can lead to misfires and engine stalling.
- Ignition Coil Failure: A malfunctioning ignition coil may not generate the necessary spark to ignite the fuel mixture, causing the engine to shut down.
3. Air Intake Issues:
- Clogged Air Filter: A blocked air filter can limit the airflow to the engine, leading to a lean fuel mixture and engine cutoff.
- Air Intake Leaks: Leaks in the air intake system can also disrupt the fuel-air mixture, causing engine stalling.
4. Electrical Problems:
- Loose Battery Connections: Poor battery connections can lead to voltage drops and insufficient power supply to the engine's electrical components.
- Defective Crankshaft Position Sensor: A faulty crankshaft position sensor can provide incorrect signals to the engine control unit, causing the engine to stall.
5. Engine Mechanical Problems:
- Low Engine Oil: Insufficient engine oil can cause lubrication issues and engine damage, leading to engine cutoff.
- Engine Overheating: Extreme engine temperatures can trigger safety mechanisms to shut down the engine.
6. Immobiliser Issues:
- Faulty Immobiliser: Some Nissan models have immobilisers that can malfunction and prevent the engine from starting or can cause it to cut off after starting.
7. Computer Issues:
- ECU Faults: Malfunctions within the Engine Control Unit (ECU) can cause various engine problems, including sudden shutdowns.
To identify the specific cause in your case, it's recommended to have a qualified mechanic diagnose the issue using appropriate diagnostic tools.