Q: I unplugged mass air flow sensor

asked by on June 23, 2017

I unplugged mass air flow sensor while car was on and it didn't turn off and then check engine light appeared how long will the light stay on?

My car has 440000 miles.

When you unplugged the part while the engine was running, the Electronic Control Unit (ECU) saw it as a component failure and lit up the check engine light. There will now be a code stored for the air mass meter. The check engine light may go off after about 50 drive cycles (a few weeks for most people) if the ECU doesn’t see any more problems, but the stored code will remain until it is cleared. You can have the codes cleared and the light put out by contacting Your Mechanic. They can send a technician to your home or office to read and clear the ECU right there on the spot.

Was this answer helpful?
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

Squeaking noise while driving

Hi there. This is possible, especially if the intensity of the noise changes as the weight of the vehicle is shifted from side to side. Wheel bearing failures will generally cause a constant growling noise but you may be in...

I was driving in the rain and when i went through a dip full of watter, water splashed into my car n got my feet all wet... the wa

Vehicles are far from waterproof in all circumstances. When the vehicle is designed the structure is engineered to keep rain out and most water sprayed from the wheel well areas but if you enter standing water of significant depth, some...

2003 Nissan Frontier manual - engaging reverse stalls engine

Hello - this problem sounds as though your shift linkage is engaging BOTH reverse and a forward gear at the same time - effectively locking up the transmission. This would explain why the engine stalls when this occurs, but works...

Related articles

4 Essential Things to Know About Your Car’s Check Engine Light
The Check Engine Light turns on when there's an engine problem. A bad oxygen sensor or failed spark plug are common causes for the Check Engine Light.
P0267 OBD-II Trouble Code: Cylinder Number 3 Injector Circuit High
P0267 P0267 code definition Cylinder Number 3 Injector Circuit High What the P0267 code means P0267 is an OBD-II diagnostic trouble code which indicates that the engine control module (ECM) detected the cylinder number 3 injector circuit having a high...
P0782 OBD-II Trouble Code: 2-3 Shift Malfunction
P0782 code means the PCM has detected a problem with the 2-3 shift function often due too faulty solenoids or transmission failure.