Replacing the mass air flow sensor sooner rather than later will avoid these potentially more serious and expensive problems. ![]() Ignoring a misfire could result in ignition failure, catalytic converter damage, and unsafe or dangerous conditions while operating the vehicle. If you continue to drive with a bad MAF, it could cause your engine to misfire. You may also get a P0174 code, which is the same problem on a second cylinder bank if your engine has one. A P0171 code is common, which means there is too much air in the fuel/air mixture. ![]() The first thing you may notice is your engine running a little bit rough, or perhaps not having as much power as you expect. What Happens If You Don’t Replace the MAF Sensor? It may also be possible to clean your mass air flow sensor instead of replacing it, but it takes the same amount of time to remove and replace it, so your mechanic will likely just replace it to be sure it’s fixed. Once the mechanic has the part, it shouldn’t take them more than an hour of work to replace it, so your car should be in and out of the shop on the same day. This gives the ECM inaccurate information and causes an incorrect fuel/air mixture. Sometimes this sensor can get clogged with debris or fail entirely. This enables the ECM (the computer that runs the engine) to calculate and add the proper amount of fuel. The mass air flow sensor (MAF) measures how much air goes into your engine. Your engine requires a precise mixture of fuel and air in order to run at maximum power and efficiency. Also, even if cleaning the sensor doesn’t solve your problem, now you’ll know how to find it, remove it, and replace it yourself. For the minimal cost, it’s well worth trying to clean it before you replace it. But sometimes the sensor is just dirty, and you can fix it yourself with just a $10 can of cleaner. Upon diagnosing a mass air flow sensor problem, a mechanic will typically replace it to make sure the problem is fixed properly the first time. However, you can save even more money by troubleshooting the problem yourself. This is a fairly quick and easy repair for a mechanic, hence the relatively low labor cost. Use the FIXD sensor and app to find out for sure that this is the case. ![]() This usually triggers a check engine light and either a P0101, P0171, or P0174 code. The mass air flow sensor isn’t a routine maintenance item, but like any electronic part, it can occasionally fail. Get a more accurate estimate for your mass air flow sensor replacement using RepairPal’s Fair Price Estimator For a more accurate estimate based on your make, model, and location, use the RepairPal Fair Price Estimator. Related repairs or maintenance, such as air filter replacement, may also be needed. This price range is based on national averages for all vehicles and does not factor in taxes, fees, or your particular make and model. The Average Mass Air Flow Sensor Replacement Cost Ranges from $10 to $330 Depending on if You Go to the Mechanic or DIY.
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