2012 nissan altima mass air flow sensor problems

The computer system uses this air reading to determine how much fuel to pull in. When there is a leak in the intake gasket, it lets unmetered air enter the engine, resulting in an inaccurate air reading from the mass air flow sensor to the vehicle’s computer system. The intake gasket is located between the vehicle’s air intake and the engine. The intake gasket is important because it allows the car’s engine to get the oxygen it needs to create the sparks within the engine cylinders that are needed to get the engine going or kick start. A leaky intake gasket can lead to inefficient fuel economy, the vehicle’s engine not operating efficiently or even result in engine damage. It’s common for the intake gasket to go bad in the Nissan Altimas, which affect air intake. Leaking Intake Gasket Affecting Air Flow Sensor

An estimate to repair can be anywhere from $167 and $215. As mentioned, having faulty camshaft or crankshaft position sensors can be dangerous and is a big safety issue, so if purchasing a pre-owned Nissan Altima, you’ll want to have these two sensors tested. There are 24 model years that were affected beginning in 1993 and spanning through 2017, affecting mainly the 2.5L 4 cylinder and 3.5L V6 engines. Unfortunately, the recall is VIN-specific so you’ll need to call a Nissan dealership to determine if your Nissan Altima is part of the recall. It’s a common problem that has been reported by consumers throughout the years, causing Nissan to issue a recall for this problem.

If you determine that only one of the sensors is faulty, the best recommendation is to get them both replaced even though only one may be faulty. If you suspect failing sensors, you should have them tested by a professional. If one or both of these sensors is failing you may experience frequent stalling, reduced gas mileage, reduced engine power, or worse, the car not starting up at all. Consumers have also reported rough riding after the engine starts. Failing Camshaft or Crankshaft Position SensorĪ failing camshaft or crankshaft position sensor can cause the vehicle to not start or cause the engine to stall while the car is moving which can be dangerous.

Regardless of the Nissan model year, the most consistently reported problems specific to the Nissan Altima deal with the camshaft and crankshaft position sensors, intake gasket, fuel pump, catalytic converter, engine seal and transmission.

2012 nissan altima mass air flow sensor problems