Mass air flow issues trouble codes sonic maf (mass air fl...

Q: Mass air flow issues

asked by on September 20, 2016

I had a reading of a bad mass air flow sensor. I had it replaced and the engine light came back on and had another computer reading on it and it came back as a mass airflow sensor problem. What else could it be

My car has 60 miles.
My car has an automatic transmission.

Try taking the mass air flow sensor out and cleaning it as these can often times trigger a code simply as a result of just being dirty. By far the most common MAF failure is caused by accumulation of dirt on the hot wire.

This is a wire on the end of the sensor that heats up as the ignition is turned off to burn off excess particles and dirt. Even though the sensor is protected by the air filter (it’s often mounted inside the air filter housing), oil mist or fine dust that contacts the hot wire tends to bake onto the wire.

Also, check your air filter to be sure that it is not simply filtering dirt to the mass air flow sensor as mentioned above.

If the problem persists, consider YourMechanic, as one of our mobile technicians can come to your home and thoroughly diagnose the Check Engine Light firsthand for an accurate repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Check engine light and stalling

Hello. The symptoms you describe can be caused by many things. An issue with the engine management, fuel, or ignition systems can all cause performance issues, and if serious enough, stalling. Anything ranging from a bad engine management sensor, to...

Car idles rough wants to almost do and kinda jumps when at stop lights and lights flicker but stops when given gas

There are a few components that could be causing your problem. You may want to start by doing some voltage testing on the battery and the alternator. If you know your alternator and battery are good, look at the drive...

My car takes a long time to start

Hi there. From the description you have provided, I don't believe a bad fuel rail sensor could cause the ECM (electronic control module)/PCM (powertrain control module) to set a P0335. The crankshaft position sensor could set the P0335 and cause...

Related articles

P2794 OBD-II Trouble Code: Gear Shift Direction Circuit Low
P2794 means there is a problem with a gear shift or lever direction or position due to a worn transmission, an electrical issue or a bad sensor.
P0797 OBD-II Trouble Code: Pressure Control Solenoid C Stuck On
P0797 means that there is a problem in one of the electronic pressure control solenoids or circuits due to a faulty solenoid, or low or dirty fluid.
P0572 OBD-II Trouble Code: Cruise Control/Brake Switch A Circuit Low
P0572 means there is a malfunction within the cruise control system or brake switch often due to faulty wires or damage (liquids).