Skip the auto shop - Our mechanics make house calls

Q: Check engine light still on after cleaning mass airflow sensor

asked by on

My car has 129,000 miles. A auto shop told me that one of the check-engine codes was for the mass airflow sensor. He told me that replacing the sensor was an option or another avenue was to first try cleaning it to see if the check engine light stayed on after cleaning. I decided on the cleaning option, to save money. However, the check engine light came back on after the cleaning. I don’t have much experience with cars, but I thought I might try cleaning it again before having him replace the sensor. Is your advice that I could try cleaning it myself or go ahead and have it replaced?

A: First check to see what codes are being set...

First check to see what codes are being set which cause the Check Engine light to illuminate. This problem may or may not be caused by the mass airflow sensor. If it is the MAF, and cleaning it was unsatisfactory, it will be need to be replaced. There are many possible causes for the Check Engine Light to come on besides the mass airflow sensor, so have an expert read the codes and address the Check Engine Light accordingly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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

Q: help??

Hi there. Check the computer of the car for any codes that could be stored or pending. This will give you a logical area to oversee what needs repaired. If the camshaft position sensor message is appearing, then the camshaft...

Q: Slow acceleration

Thanks for writing in about the acceleration issue with your 2007 Volvo S60. At first glance, I'd agree with you that the problem would be caused by the MAF sensor, as that's what commonly causes the slow acceleration issues and...

Q: No acceleration past 30 mph, then 10 mph

Hello there, thank you for asking about your 1999 Chrysler Intrepid. The engine oil being overfull will not turn on the Check Engine Light. However, a transmission problem could and that's what your issue sounds like. The first step in...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...