Skip the auto shop - Our mechanics make house calls

Q: Code 102 Mass Airflow Low Volts - 1998 Pontiac Grand Prix

asked by on

When I unplugged the mass Air flow sensor my car stalls does that mean the sensor is bad

My car has 220000 miles.
My car has an automatic transmission.

Hello. The diagnostic code you are receiving is telling you the circuit is is not functioning within its normal voltage range. This is typically due to the sensor being bad, a faulty connection, or a dirty sensor. You can start be removing the sensor and attempting to clean it. Then reinstall and drive the vehicle for a few minutes to see if the warning light or code reappears. If it does, the mass airflow sensor will need to be replaced.

Removing the sensor and having the engine stall tells you the sensor is still performing part of its job, but is likely starting to fail or is contaminated. There is a chance the engine is having a more serious problem, but it very rare any of those issue would trigger this code. Clean the sensor, or replace it.

To avoid any unnecessary repairs, consider YourMechanic, as one of our mobile technicians can come to your location and give you a more personal diagnoses of your stalling issue. Best of luck.

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

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: Fuel tank

Hi There, A number of other things may also cause this code to be triggered as well such as a faulty fuel cap, a faulty purge solenoid, a damaged charcoal canister or in some cases a vacuum leak. I would...

Q: My car starts but only runs for 3 seconds before it shuts down

Hello - Is your Check Engine Light on? If so, you can check the trouble codes yourself to diagnose the problem, or you can have a mobile technician, such as one from YourMechanic, come by at your convenience and diagnose...

Q: check engine light is on and gas light is flashing on my 1998 s420 mercedes Benz

Hi Jesse. Thanks for contacting us today. In most cases, a faulty gas cap or one that is not screwed on tight will cause the gas light and check engine light to illuminate. it's also possible that one of the...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...