Skip the auto shop - Our mechanics make house calls

Q: What does the malfunction indicator Warning Light mean?

asked by on

What does the malfunction indicator Warning Light mean?

The malfunction indicator Warning Light is connected to the On-Board Diagnostics-Second Generation (OBD II) system, which gauges the vehicle’s emissions. When the malfunction indicator Warning Light illuminates, then the OBD II system has detected an issue with the emissions system, and you should get your car inspected as soon as possible. Tip Like all warning lights, the malfunction indicator Warning Light will briefly illuminate when your vehicle is turned on. The light is only a problem if it stays lit when the engine is running.

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: Crank seal leaking

Hello! I suggest getting a second opinion of the source of the leak, because a crank seal will not leak a fluid other than oil. The leak may be from a transmission seal, which is located almost "face to face"...

Q: What does the malfunction indicator Warning Light mean?

The malfunction indicator Warning Light is on your instrument cluster. It illuminates when the On-Board Diagnostics-Second Generation (OBD II) system detects an issue. The OBD II system monitors your vehicle’s emissions. When the malfunction indicator Warning Light is illuminated, it...

Q: Where do I find my vehicle identification number (VIN)?

Your vehicle identification number (VIN) is unique to your vehicle, and is used as a legal identifier of your car. The VIN is located on the drive side of the windshield, where the windshield meets the dash. It is easily...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...