How do you reset the mass airflow sensor on a Toyota?

Start the engine. Shut the engine off and wait for 10 seconds. Start the engine again; this should reset the computer and extinguish any service engine soon light.

How do you test a mass air flow sensor on a Toyota?

Set your meter at or close to 10 V DC. Start the engine and let it idle. Backprobe the signal and ground wires (red probe to signal and black probe to ground). Depending on your MAF sensor, your voltage reading should be between 0.60 to 0.80 volts at idle.

What is the function of an air flow sensor?

A mass (air) flow sensor ( MAF ) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. In automotive applications, air density varies with the ambient temperature, altitude and the use of forced induction, which means that mass flow sensors are more appropriate than volumetric flow sensors for determining the quantity of intake air in each cylinder.

What are the symptoms of a bad mass air flow sensor?

Symptoms of a faulty mass airflow sensor include hard starts, stalling after starting, engine hesitation during acceleration and engine hiccups. Excessive idling can be another symptom. A faulty mass air flow sensor may also have similar symptoms to low fuel pressure, which indicates a bad fuel pump.

Can you drive with a bad mass air flow sensor?

Yes! It is possible to drive with the signs of a bad MAF sensor but for a specific duration. However, it will be recommended not to drive with a bad MAF sensor to lead the driver towards engine issues. Usually, people neglect what the MAF sensor tells them that often leads them towards the worst engine conditions.

What is the air flow sensor do to the car?

The Mass Air Flow Sensor or MAF sensor is an important part for most car engines to function properly. It controls how much air is entering the car engine and then sends this information to the engine control unit , which controls how much fuel the fuel injectors should inject into the engine.