Skip the auto shop - Our mechanics make house calls

Q: Calibration?

asked by on

Car ran bad had dtc for maf sensor replaced sensor runs fine now but keeps resetting dtc after its cleared.

My car has 200000 miles.
My car has a manual transmission.

The intake system should be checked for leaks. A vacuum leak from items like a broken air intake boot, broken/disconnected vacuum lines, or a leaking intake manifold gasket can lean out the air/fuel mixture or disturb intake airflow enough to set a mass airflow code. Also, the issue can be electrical. If there is a break or loose wire in the mass airflow harness, or from the engine control unit to the mass airflow sensor, the fault code will remain after installing a new one. Have a certified technician look into the check engine light to find the exact cause. Locating an intake leak can be tricky.

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!
  1. Home
  2. Questions
  3. Calibration?

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: Gear locked and car not starting

Hi there. There is an issue with the shifter interlock lock solenoid in the shifter housing. The solenoid has lost power or it has been shorted out. Remove the carpeting and get to the shifter housing and remove it from...

Q: I have white smoke coming out of my exhaust pipe. Could it be a bad ccv?

White smoke makes me worry about the head gasket. If there is coolant getting into the combustion chambers, it makes a nasty smelling white smoke Burning coolant can have a very strong smell, from a sweet kind of odor to...

Q: My car's battery light is on and it started to act funny while driving, what do you think is wrong?

These are all signs of a failing battery. You will need to have the battery tested. When the battery fails, the vehicle will attempt to run off of the alternator, which can cause it to stress and fail as well....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...