Mass Air Flow Sensor replacement & service made easy

The mass air flow sensor (MAF) is used to determine the flow rate of air entering into the intake system. This information is then used together with the information being fed back by lambda sensors to the vehicle's computer to make corrections to the fueling of the engine and make it more efficient.

Depending on the manufacturer, a number of different processes will need to be done in order to access the mass air flow sensor, however the mechanic will need to do some of the following basic steps

• The mechanic will assess the situation by reading the diagnostic codes and checking live data
• Once confirmed that the mass air flow sensor is faulty, they will continue on to replacing it.
• Once replaced, the mechanic will start the engine and recheck the error codes

Unless you are a qualified mechanic with the required skills, training and equipment to do the job, we strongly recommend a mass air flow sensor replacement is only carried out by a professional mechanic. ClickMechanic can help get you a vetted and local mechanic to carry out the work. Just enter your postcode and your car's registration number at the top of this page and select the work needed to get an instant fixed price up front.

You may experience some or a number of the following;

• When the 'Check Engine' light on your dashboard is on (EML)
• When the engine won't start or cuts out during operation.
• When the engine runs rough (a rough idle for example).
• When the engine doesn't perform as well as usual.
• When the car's fuel consumption is higher than usual.

A mass air flow sensor replacement usually takes around 1 hour, but can take less or more time. Ultimately, the time that the job will take will depend on a number of factors, like your vehicle's make and model, year, as well as other factors. Select your car at the top of this page for information on job time and cost for your vehicle through ClickMechanic.

Although the units are getting more reliable, there is a chance you will need to get your mass air flow sensor replaced at least once in a vehicle's lifetime. The basic fact is that if your mass air flow sensor has failed, it needs to be replaced before the car will drive correctly.

However, as there are many other issues that can cause the same symptom, it is better to have a diagnostic done prior to spending money replacing it.

If you suspect there is any issue with your vehicle's mass air flow sensor or there are concerns about its condition, book an inspection with a professional mechanic as soon as possible, driving the vehicle may lead to further complications and may damage the engine. Engine efficiency will be impaired as the air-to-fuel mixture will not be optimal, and may lead to the engine not starting or running rough.