Mass Airflow Sensor Failure A Common Cause for the “Check Engine Light” If you own a Jetta or Golf, you've most likely had your check engine light come on due to a faulty Mass Airflow Sensor. Read on to find out what that means. A mass air flow sensor, or MAF, is a tool found in modern engines used to monitor the incoming air. This information is essential for the engine control unit (ECU) to deliver a balanced amount of fuel mass to the engine. It is usually installed inside the intake air duct between the air filter and the engine. Typically a MAF is used in conjunction with an oxygen sensor to control the engine's air-to-fuel ration very accurately. The MAF will provide the “open-loop” predicted air flow information to the ECU, while the oxygen sensor provides the “closed-loop” feedback in order to make minor corrections to the predicted air mass. Problems with Mass Air Flow Sensors are common. They are mechanical in nature and are therefore prone to failure.

Their measuring elements tend to get worn overtime – or if you drive a VW, seemingly in a matter on weeks. A bad or contaminated MAF is not to be taken lightly. A malfunctioning one can possibly cause a wide range of vehicle problems such as stalling, misfiring, poor fuel economy or bad acceleration.air purifier frys A MAF at a dealership can cost anywhere between $75—$150 dollars, with labor costs adding another $150 to that total. space gard high efficiency air cleaner model 2400You can try and clean the mass air flow sensor yourself by following the instructions in this article: How To Clean or Replace a MAF Sensor for VW or Audi DIY.air duct cleaning in loveland co This step is crucial, don't just complain on forums!

The sites below will actively manage your complaints and turn them into useful statistics. and the CAS will report dangerous trends to the authorities and are often called upon by law firms for help with Class Action lawsuits. Make sure to file your complaint on all three sites, we can't stress that enough. is a free site dedicated to uncovering problem trends and informing owners about potential issues with their cars. Major class action law firms use this data when researching cases. Notify the Center for Auto Safety The Center for Auto Safety (CAS) is a pro-consumer organization that researches auto safety issues & often compels the US government to do the right thing through lobbying & lawsuits. Report a Safety Concern to NHTSA The National Highway Traffic Safety Administration (NHTSA) is the US agency with the authority to conduct vehicle defect investigations & force recalls. Their focus is on safety-related issues.P0102 OBD-II Trouble CodeTechnical Description

Mass Air Flow (MAF) Circuit Low Input What does that mean? Basically this means that there is a problem with the Mass Air Flow (MAF) sensorA more technical description would be that the MAF circuit had lower than expected voltage (air flow). Other MAF sensor circuit DTC trouble codes are P0100, P0101, P0103, and P0104. You will likely not notice any serious drivability problems, although there may be symptoms such as a general decrease in power or sluggishness. A code P0102 may mean that one or more of the following has happened: The MAF may be disconnected, or a wiring connection may be bad The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate The MAF sensor may be faulty The vehicle computer may be faulty (very rare) The simplest thing to do is to reset the code and see if it comes back. start with the cheapest, easiest repair procedures:

Verify that the Mass Air Flow Sensor wiring is connected properly and that there are no broken / frayed wires. Inspect for any air leaks near the MAF sensor. Take the MAF out and clean it using a spray cleaner such as brake cleaner or electrical contact cleaner. Be gentle with the sensor. Check the voltage of the MAF sensor (refer to a repair manual for vehicle Replace the MAF sensor. Register now to ask a question (free) Related P0102 DTC Discussions2005 Eclipse Codes P0135 P0113 P0102Alright - here are the codes. Here is the trouble - the car cuts off while idling, but cranks back up no problem. It will jerk and shudder and just run really rough, like it is running out of gas (it is not). Seems to make it worse if the air is on. Today it did not cut off at a... I have a 97 buick riviera 3.8l supercharged and I'm getting a p0102 code. I have replaced the maf sensor and was told I might have to change the throttle position sensor too. I have done done other things like oil flush spark plug and wire replace air filter.

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