In most cases, a faulty mass flow sensor has a specific code that will generate during computer diagnostics, and is usually easy to determine with computer testing equipment. If you believe your 2012 Nissan Sentra has a faulty mass air flow sensor, take it to a qualified mechanic so that a complete computer diagnostic can be run. Hesitation and jerking during acceleration The engine hesitates or drags while under load or idle The engine is very hard to start or turn over Here are some of the most common symptoms of a faulty mass airflow sensor:
Symptoms of a Faulty Mass Air Flow SensorĪ faulty mass airflow sensor will cause problems similar to low compression or low vacuum, and will also show symptoms similar to when your 2012 Nissan Sentra has low fuel pressure from a faulty fuel pump. When a vehicle's mass airflow sensor is faulty or defective it can cause a variety of problems, and usually results in very poor performance from your engine. The air mass information is necessary for the ECU to correctly balance and deliver the correct amount of fuel to the engine. Sensor (MAS) determines the mass of air entering a vehicle's fuel injection engine, and passes that data to the Engine Control Unit, or ECU.
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