Skip the auto shop - Our mechanics make house calls

Q: Check Engine light is coming on

asked by on

My Check Engine light is in. I have had this problem in the past and it is always the mass air flow sensor. It tends to come on when I am on the freeway going about 80 MPH and hit the gas hard to pass. I don't really see any difference in performance whether the light is on or not.

A: The problem may not be the Mass Air Flow or...

The problem may not be the Mass Air Flow or MAF. It could be an unmetered air leak, such as a torn intake duct or vacuum line. Check the ducts and make sure they are free from cracks or splits and that the clamps are secure. If you find an issue or need additional help, look for a qualified technician to pinpoint the cause of your Check Engine Light.

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: Car is jerking, and Check Engine Light flashes

When the Check Engine Light is flashing, it is telling you that the engine has a problem that may be causing damage to your catalytic converter assembly. The most likely problem is an engine misfiring from an ignition problem, such...

Q: Brake Booster

Hi Laura, It sounds like you may have a bad brake booster. The reason the brakes work when the car is not running is that the vacuum The brake booster is a mechanism that uses vacuum pressure to take...

Q: Lac of boost and oil pissing

Hi there. We require a bit more information from you in regards to what symptoms you are specifically having with your Mazda 6 besides oil spilling from the dipstick. In some cases, reverse vacuum pressure can cause this to occur...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...